Climate Change in Ortley, South Dakota

96+ years of recorded temperature data show Ortley is changing.

Based on our analysis of 96 years of temperature data near Ortley, SD, this area shows relatively stable temperatures of approximately +0.2°F per decade. 7 of the last 10 years recorded above-average temperatures, and 1987 was the warmest year on record at +4.8°F above the historical baseline.

Key Climate Facts

Rate of Change

+0.2°F

per decade

Warmest Year

1987

+4.8°F anomaly

Recent Warm Years

7 / 10

above-average years

Decade Shift

+1.6°F

2020s vs 1930s

Compared to the National Average

Ortley is warming at roughly the national average rate.

National: +0.20°F/decade
Ortley: +0.17°F/decade

Climate Spiral

Each ring represents one year of monthly temperatures. Blue indicates cooler-than-average periods; red indicates warmer. The outward drift over time reveals Ortley's long-term warming trend.

Temperature anomaly spiral for Ortley, South Dakota
Climate spiral: monthly temperature anomalies from 96+ years of NOAA records for Ortley, SD.

Warming Stripes

Each vertical stripe represents one year. The color gradient from blue to red shows how annual temperatures have shifted relative to the historical average.

Warming stripes for Ortley, South Dakota
Warming stripes: each stripe is one year of average temperature anomaly for Ortley, SD.

Temperature Trend

Annual temperature anomalies plotted over time with a linear regression trend line. The slope of +0.17°F per decade quantifies the rate of change.

Temperature trend chart for Ortley, South Dakota
Linear trend: annual temperature anomalies with trend line for Ortley, SD.

Temperature by Decade

1930s
+0.72°F
1940s
-0.05°F
1950s
-0.88°F
1960s
-0.80°F
1970s
-0.65°F
1980s
+0.68°F
1990s
+0.17°F
2000s
+0.84°F
2010s
+0.92°F
2020s
+2.38°F

Average temperature anomaly per decade relative to the historical baseline period.

Anomaly Scale

-7.2°F Colder Normal +8.3°F Warmer

Color bounds are set to the 5th and 95th percentile of anomalies to avoid outlier washout.

Monthly Temperature Records

Complete monthly temperature record for Ortley, SD. Filter by decade or download as CSV.

Data Sources & Audit

Station
nClimGrid 5km Grid Point
Distance
1.1 mi
Coverage
99.1%
Records
1,154
Range
1930-01 – 2026-02
Full Data Audit 1,154 records
YearMonthTempBaselineAnomalySourceGap
1930Jan-0.3°F8.3°F-8.7°NCLIMGRID
1930Feb24.7°F14.3°F+10.4°NCLIMGRID
1930Mar26.4°F27.5°F-1.1°NCLIMGRID
1930Apr44.7°F42.6°F+2.1°NCLIMGRID
1930May52.4°F55.1°F-2.7°NCLIMGRID
1930Jun62.1°F64.7°F-2.6°NCLIMGRID
1930Jul72.4°F70.4°F+2.0°NCLIMGRID
1930Aug70.2°F67.8°F+2.5°NCLIMGRID
1930Sep57.1°F57.7°F-0.5°NCLIMGRID
1930Oct42.1°F44.6°F-2.5°NCLIMGRID
1930Nov29.7°F27.7°F+2.0°NCLIMGRID
1930Dec19.2°F13.5°F+5.7°NCLIMGRID
1931Jan21.8°F8.3°F+13.4°NCLIMGRID
1931Feb27.9°F14.3°F+13.5°NCLIMGRID
1931Mar27.4°F27.5°F-0.2°NCLIMGRID
1931Apr44.4°F42.6°F+1.8°NCLIMGRID
1931May51.4°F55.1°F-3.7°NCLIMGRID
1931Jun69.7°F64.7°F+5.0°NCLIMGRID
1931Jul73.3°F70.4°F+2.9°NCLIMGRID
1931Aug67.1°F67.8°F-0.6°NCLIMGRID
1931Sep64.5°F57.7°F+6.9°NCLIMGRID
1931Oct48.7°F44.6°F+4.1°NCLIMGRID
1931Nov32.7°F27.7°F+5.0°NCLIMGRID
1931Dec20.5°F13.5°F+7.0°NCLIMGRID
1932Jan9.6°F8.3°F+1.3°NCLIMGRID
1932Feb16.0°F14.3°F+1.7°NCLIMGRID
1932Mar18.7°F27.5°F-8.9°NCLIMGRID
1932Apr42.5°F42.6°F-0.1°NCLIMGRID
1932May55.9°F55.1°F+0.8°NCLIMGRID
1932Jun66.5°F64.7°F+1.8°NCLIMGRID
1932Jul70.6°F70.4°F+0.2°NCLIMGRID
1932Aug68.3°F67.8°F+0.6°NCLIMGRID
1932Sep56.5°F57.7°F-1.1°NCLIMGRID
1932Oct41.1°F44.6°F-3.5°NCLIMGRID
1932Nov26.1°F27.7°F-1.5°NCLIMGRID
1932Dec11.4°F13.5°F-2.2°NCLIMGRID
1933Jan17.6°F8.3°F+9.3°NCLIMGRID
1933Feb10.4°F14.3°F-3.9°NCLIMGRID
1933Mar27.6°F27.5°F+0.1°NCLIMGRID
1933Apr40.7°F42.6°F-1.9°NCLIMGRID
1933May54.2°F55.1°F-0.9°NCLIMGRID
1933Jun73.4°F64.7°F+8.7°NCLIMGRID
1933Jul73.7°F70.4°F+3.3°NCLIMGRID
1933Aug67.5°F67.8°F-0.2°NCLIMGRID
1933Sep63.5°F57.7°F+5.9°NCLIMGRID
1933Oct43.3°F44.6°F-1.3°NCLIMGRID
1933Nov28.2°F27.7°F+0.6°NCLIMGRID
1933Dec11.7°F13.5°F-1.8°NCLIMGRID
1934Jan16.1°F8.3°F+7.8°NCLIMGRID
1934Feb18.0°F14.3°F+3.7°NCLIMGRID
1934Mar25.6°F27.5°F-2.0°NCLIMGRID
1934Apr43.1°F42.6°F+0.6°NCLIMGRID
1934May66.3°F55.1°F+11.2°NCLIMGRID
1934Jun68.5°F64.7°F+3.9°NCLIMGRID
1934Jul73.5°F70.4°F+3.1°NCLIMGRID
1934Aug67.3°F67.8°F-0.4°NCLIMGRID
1934Sep53.7°F57.7°F-3.9°NCLIMGRID
1934Oct50.0°F44.6°F+5.5°NCLIMGRID
1934Nov33.7°F27.7°F+6.1°NCLIMGRID
1934Dec12.1°F13.5°F-1.4°NCLIMGRID
1935Jan6.2°F8.3°F-2.1°NCLIMGRID
1935Feb24.8°F14.3°F+10.5°NCLIMGRID
1935Mar30.1°F27.5°F+2.6°NCLIMGRID
1935Apr37.7°F42.6°F-4.8°NCLIMGRID
1935May49.6°F55.1°F-5.5°NCLIMGRID
1935Jun60.9°F64.7°F-3.8°NCLIMGRID
1935Jul75.3°F70.4°F+4.8°NCLIMGRID
1935Aug68.6°F67.8°F+0.8°NCLIMGRID
1935Sep59.5°F57.7°F+1.8°NCLIMGRID
1935Oct43.5°F44.6°F-1.1°NCLIMGRID
1935Nov20.8°F27.7°F-6.9°NCLIMGRID
1935Dec12.9°F13.5°F-0.7°NCLIMGRID
1936Jan-5.4°F8.3°F-13.7°NCLIMGRID
1936Feb-9.6°F14.3°F-23.9°NCLIMGRID
1936Mar27.4°F27.5°F-0.1°NCLIMGRID
1936Apr36.5°F42.6°F-6.1°NCLIMGRID
1936May60.9°F55.1°F+5.8°NCLIMGRID
1936Jun65.9°F64.7°F+1.2°NCLIMGRID
1936Jul79.5°F70.4°F+9.1°NCLIMGRID
1936Aug71.7°F67.8°F+3.9°NCLIMGRID
1936Sep61.6°F57.7°F+3.9°NCLIMGRID
1936Oct41.9°F44.6°F-2.6°NCLIMGRID
1936Nov24.9°F27.7°F-2.8°NCLIMGRID
1936Dec15.4°F13.5°F+1.9°NCLIMGRID
1937Jan-4.3°F8.3°F-12.7°NCLIMGRID
1937Feb8.2°F14.3°F-6.1°NCLIMGRID
1937Mar23.5°F27.5°F-4.0°NCLIMGRID
1937Apr38.7°F42.6°F-3.9°NCLIMGRID
1937May56.4°F55.1°F+1.3°NCLIMGRID
1937Jun62.5°F64.7°F-2.1°NCLIMGRID
1937Jul71.6°F70.4°F+1.2°NCLIMGRID
1937Aug73.6°F67.8°F+5.8°NCLIMGRID
1937Sep58.9°F57.7°F+1.3°NCLIMGRID
1937Oct42.5°F44.6°F-2.0°NCLIMGRID
1937Nov25.8°F27.7°F-1.9°NCLIMGRID
1937Dec10.8°F13.5°F-2.8°NCLIMGRID
1938Jan7.6°F8.3°F-0.8°NCLIMGRID
1938Feb11.8°F14.3°F-2.6°NCLIMGRID
1938Mar32.1°F27.5°F+4.6°NCLIMGRID
1938Apr43.6°F42.6°F+1.1°NCLIMGRID
1938May51.7°F55.1°F-3.4°NCLIMGRID
1938Jun64.3°F64.7°F-0.3°NCLIMGRID
1938Jul70.1°F70.4°F-0.4°NCLIMGRID
1938Aug72.2°F67.8°F+4.4°NCLIMGRID
1938Sep60.8°F57.7°F+3.2°NCLIMGRID
1938Oct52.1°F44.6°F+7.5°NCLIMGRID
1938Nov25.2°F27.7°F-2.5°NCLIMGRID
1938Dec17.5°F13.5°F+4.0°NCLIMGRID
1939Jan14.8°F8.3°F+6.5°NCLIMGRID
1939Feb3.2°F14.3°F-11.2°NCLIMGRID
1939Mar27.0°F27.5°F-0.6°NCLIMGRID
1939Apr40.7°F42.6°F-1.8°NCLIMGRID
1939May61.2°F55.1°F+6.1°NCLIMGRID
1939Jun64.6°F64.7°F-0.1°NCLIMGRID
1939Jul71.2°F70.4°F+0.8°NCLIMGRID
1939Aug68.5°F67.8°F+0.7°NCLIMGRID
1939Sep61.0°F57.7°F+3.3°NCLIMGRID
1939Oct43.8°F44.6°F-0.8°NCLIMGRID
1939Nov34.7°F27.7°F+7.0°NCLIMGRID
1939Dec25.6°F13.5°F+12.0°NCLIMGRID
1940Jan1.6°F8.3°F-6.7°NCLIMGRID
1940Feb14.5°F14.3°F+0.1°NCLIMGRID
1940Mar22.0°F27.5°F-5.5°NCLIMGRID
1940Apr38.8°F42.6°F-3.8°NCLIMGRID
1940May54.1°F55.1°F-1.0°NCLIMGRID
1940Jun63.9°F64.7°F-0.8°NCLIMGRID
1940Jul72.7°F70.4°F+2.2°NCLIMGRID
1940Aug65.2°F67.8°F-2.6°NCLIMGRID
1940Sep62.4°F57.7°F+4.7°NCLIMGRID
1940Oct50.7°F44.6°F+6.1°NCLIMGRID
1940Nov22.1°F27.7°F-5.6°NCLIMGRID
1940Dec19.6°F13.5°F+6.0°NCLIMGRID
1941Jan11.4°F8.3°F+3.1°NCLIMGRID
1941Feb11.2°F14.3°F-3.1°NCLIMGRID
1941Mar25.3°F27.5°F-2.2°NCLIMGRID
1941Apr46.2°F42.6°F+3.6°NCLIMGRID
1941May59.4°F55.1°F+4.3°NCLIMGRID
1941Jun64.1°F64.7°F-0.5°NCLIMGRID
1941Jul71.3°F70.4°F+0.9°NCLIMGRID
1941Aug68.9°F67.8°F+1.1°NCLIMGRID
1941Sep58.7°F57.7°F+1.1°NCLIMGRID
1941Oct45.7°F44.6°F+1.1°NCLIMGRID
1941Nov30.8°F27.7°F+3.1°NCLIMGRID
1941Dec21.7°F13.5°F+8.2°NCLIMGRID
1942Jan17.6°F8.3°F+9.2°NCLIMGRID
1942Feb16.2°F14.3°F+1.9°NCLIMGRID
1942Mar31.3°F27.5°F+3.8°NCLIMGRID
1942Apr47.5°F42.6°F+4.9°NCLIMGRID
1942May50.7°F55.1°F-4.4°NCLIMGRID
1942Jun61.6°F64.7°F-3.0°NCLIMGRID
1942Jul67.3°F70.4°F-3.1°NCLIMGRID
1942Aug66.9°F67.8°F-0.8°NCLIMGRID
1942Sep52.6°F57.7°F-5.0°NCLIMGRID
1942Oct45.0°F44.6°F+0.4°NCLIMGRID
1942Nov29.6°F27.7°F+1.9°NCLIMGRID
1942Dec10.1°F13.5°F-3.4°NCLIMGRID
1943Jan-0.3°F8.3°F-8.6°NCLIMGRID
1943Feb15.1°F14.3°F+0.8°NCLIMGRID
1943Mar19.5°F27.5°F-8.1°NCLIMGRID
1943Apr44.1°F42.6°F+1.5°NCLIMGRID
1943May50.8°F55.1°F-4.3°NCLIMGRID
1943Jun63.7°F64.7°F-0.9°NCLIMGRID
1943Jul71.5°F70.4°F+1.1°NCLIMGRID
1943Aug68.1°F67.8°F+0.3°NCLIMGRID
1943Sep55.3°F57.7°F-2.4°NCLIMGRID
1943Oct46.5°F44.6°F+2.0°NCLIMGRID
1943Nov26.9°F27.7°F-0.8°NCLIMGRID
1943Dec20.0°F13.5°F+6.5°NCLIMGRID
1944Jan22.6°F8.3°F+14.3°NCLIMGRID
1944Feb14.2°F14.3°F-0.1°NCLIMGRID
1944Mar19.9°F27.5°F-7.7°NCLIMGRID
1944Apr38.0°F42.6°F-4.6°NCLIMGRID
1944May57.9°F55.1°F+2.8°NCLIMGRID
1944Jun64.2°F64.7°F-0.5°NCLIMGRID
1944Jul68.2°F70.4°F-2.2°NCLIMGRID
1944Aug66.6°F67.8°F-1.2°NCLIMGRID
1944Sep57.1°F57.7°F-0.6°NCLIMGRID
1944Oct47.8°F44.6°F+3.2°NCLIMGRID
1944Nov30.8°F27.7°F+3.1°NCLIMGRID
1944Dec16.3°F13.5°F+2.7°NCLIMGRID
1945Jan11.9°F8.3°F+3.6°NCLIMGRID
1945Feb15.4°F14.3°F+1.1°NCLIMGRID
1945Mar35.3°F27.5°F+7.7°NCLIMGRID
1945Apr38.9°F42.6°F-3.6°NCLIMGRID
1945May48.9°F55.1°F-6.2°NCLIMGRID
1945Jun58.1°F64.7°F-6.5°NCLIMGRID
1945Jul67.9°F70.4°F-2.5°NCLIMGRID
1945Aug67.2°F67.8°F-0.6°NCLIMGRID
1945Sep55.9°F57.7°F-1.8°NCLIMGRID
1945Oct45.6°F44.6°F+1.0°NCLIMGRID
1945Nov25.9°F27.7°F-1.7°NCLIMGRID
1945Dec6.5°F13.5°F-7.0°NCLIMGRID
1946Jan9.7°F8.3°F+1.4°NCLIMGRID
1946Feb11.5°F14.3°F-2.8°NCLIMGRID
1946Mar35.7°F27.5°F+8.2°NCLIMGRID
1946Apr48.0°F42.6°F+5.4°NCLIMGRID
1946May50.9°F55.1°F-4.2°NCLIMGRID
1946Jun64.3°F64.7°F-0.3°NCLIMGRID
1946Jul69.5°F70.4°F-0.9°NCLIMGRID
1946Aug65.4°F67.8°F-2.4°NCLIMGRID
1946Sep56.3°F57.7°F-1.4°NCLIMGRID
1946Oct43.6°F44.6°F-1.0°NCLIMGRID
1946Nov27.2°F27.7°F-0.5°NCLIMGRID
1946Dec15.5°F13.5°F+2.0°NCLIMGRID
1947Jan18.6°F8.3°F+10.2°NCLIMGRID
1947Feb10.0°F14.3°F-4.3°NCLIMGRID
1947Mar24.1°F27.5°F-3.4°NCLIMGRID
1947Apr38.3°F42.6°F-4.3°NCLIMGRID
1947May49.8°F55.1°F-5.3°NCLIMGRID
1947Jun60.4°F64.7°F-4.2°NCLIMGRID
1947Jul69.2°F70.4°F-1.2°NCLIMGRID
1947Aug73.8°F67.8°F+6.1°NCLIMGRID
1947Sep58.6°F57.7°F+1.0°NCLIMGRID
1947Oct52.6°F44.6°F+8.0°NCLIMGRID
1947Nov21.7°F27.7°F-6.0°NCLIMGRID
1947Dec11.6°F13.5°F-2.0°NCLIMGRID
1948Jan5.5°F8.3°F-2.8°NCLIMGRID
1948Feb8.9°F14.3°F-5.4°NCLIMGRID
1948Mar20.0°F27.5°F-7.5°NCLIMGRID
1948Apr44.8°F42.6°F+2.2°NCLIMGRID
1948May54.5°F55.1°F-0.6°NCLIMGRID
1948Jun62.2°F64.7°F-2.5°NCLIMGRID
1948Jul70.5°F70.4°F+0.1°NCLIMGRID
1948Aug68.4°F67.8°F+0.6°NCLIMGRID
1948Sep62.9°F57.7°F+5.3°NCLIMGRID
1948Oct46.2°F44.6°F+1.6°NCLIMGRID
1948Nov29.7°F27.7°F+2.0°NCLIMGRID
1948Dec14.7°F13.5°F+1.1°NCLIMGRID
1949Jan5.1°F8.3°F-3.3°NCLIMGRID
1949Feb8.0°F14.3°F-6.4°NCLIMGRID
1949Mar25.4°F27.5°F-2.1°NCLIMGRID
1949Apr44.9°F42.6°F+2.3°NCLIMGRID
1949May58.0°F55.1°F+2.9°NCLIMGRID
1949Jun65.4°F64.7°F+0.8°NCLIMGRID
1949Jul71.1°F70.4°F+0.7°NCLIMGRID
1949Aug71.6°F67.8°F+3.9°NCLIMGRID
1949Sep55.3°F57.7°F-2.3°NCLIMGRID
1949Oct46.1°F44.6°F+1.6°NCLIMGRID
1949Nov35.5°F27.7°F+7.9°NCLIMGRID
1949Dec13.4°F13.5°F-0.1°NCLIMGRID
1950Jan-3.0°F8.3°F-11.4°NCLIMGRID
1950Feb13.2°F14.3°F-1.1°NCLIMGRID
1950Mar21.2°F27.5°F-6.3°NCLIMGRID
1950Apr32.4°F42.6°F-10.2°NCLIMGRID
1950May50.9°F55.1°F-4.2°NCLIMGRID
1950Jun64.9°F64.7°F+0.2°NCLIMGRID
1950Jul65.8°F70.4°F-4.6°NCLIMGRID
1950Aug63.4°F67.8°F-4.3°NCLIMGRID
1950Sep58.3°F57.7°F+0.6°NCLIMGRID
1950Oct47.4°F44.6°F+2.9°NCLIMGRID
1950Nov23.0°F27.7°F-4.7°NCLIMGRID
1950Dec8.8°F13.5°F-4.7°NCLIMGRID
1951Jan4.0°F8.3°F-4.4°NCLIMGRID
1951Feb16.1°F14.3°F+1.8°NCLIMGRID
1951Mar14.3°F27.5°F-13.3°NCLIMGRID
1951Apr38.1°F42.6°F-4.5°NCLIMGRID
1951May56.2°F55.1°F+1.1°NCLIMGRID
1951Jun58.6°F64.7°F-6.0°NCLIMGRID
1951Jul67.3°F70.4°F-3.1°NCLIMGRID
1951Aug64.3°F67.8°F-3.4°NCLIMGRID
1951Sep52.8°F57.7°F-4.8°NCLIMGRID
1951Oct42.6°F44.6°F-2.0°NCLIMGRID
1951Nov22.4°F27.7°F-5.3°NCLIMGRID
1951Dec7.6°F13.5°F-6.0°NCLIMGRID
1952Jan5.7°F8.3°F-2.6°NCLIMGRID
1952Feb17.4°F14.3°F+3.1°NCLIMGRID
1952Mar18.1°F27.5°F-9.5°NCLIMGRID
1952Apr44.6°F42.6°F+2.0°NCLIMGRID
1952May54.0°F55.1°F-1.1°NCLIMGRID
1952Jun66.4°F64.7°F+1.7°NCLIMGRID
1952Jul69.5°F70.4°F-0.9°NCLIMGRID
1952Aug67.4°F67.8°F-0.3°NCLIMGRID
1952Sep61.7°F57.7°F+4.0°NCLIMGRID
1952Oct41.9°F44.6°F-2.7°NCLIMGRID
1952Nov30.3°F27.7°F+2.6°NCLIMGRID
1952Dec17.2°F13.5°F+3.7°NCLIMGRID
1953Jan11.6°F8.3°F+3.3°NCLIMGRID
1953Feb16.1°F14.3°F+1.8°NCLIMGRID
1953Mar27.6°F27.5°F+0.1°NCLIMGRID
1953Apr36.6°F42.6°F-5.9°NCLIMGRID
1953May52.6°F55.1°F-2.5°NCLIMGRID
1953Jun64.3°F64.7°F-0.3°NCLIMGRID
1953Jul68.1°F70.4°F-2.3°NCLIMGRID
1953Aug68.7°F67.8°F+1.0°NCLIMGRID
1953Sep58.0°F57.7°F+0.4°NCLIMGRID
1953Oct52.1°F44.6°F+7.6°NCLIMGRID
1953Nov33.7°F27.7°F+6.1°NCLIMGRID
1953Dec15.8°F13.5°F+2.3°NCLIMGRID
1954Jan2.2°F8.3°F-6.1°NCLIMGRID
1954Feb29.0°F14.3°F+14.6°NCLIMGRID
1954Mar23.5°F27.5°F-4.0°NCLIMGRID
1954Apr41.4°F42.6°F-1.2°NCLIMGRID
1954May48.6°F55.1°F-6.5°NCLIMGRID
1954Jun63.0°F64.7°F-1.7°NCLIMGRID
1954Jul70.6°F70.4°F+0.2°NCLIMGRID
1954Aug66.7°F67.8°F-1.0°NCLIMGRID
1954Sep56.2°F57.7°F-1.5°NCLIMGRID
1954Oct42.4°F44.6°F-2.2°NCLIMGRID
1954Nov35.0°F27.7°F+7.3°NCLIMGRID
1954Dec19.7°F13.5°F+6.2°NCLIMGRID
1955Jan12.1°F8.3°F+3.8°NCLIMGRID
1955Feb7.7°F14.3°F-6.6°NCLIMGRID
1955Mar22.5°F27.5°F-5.0°NCLIMGRID
1955Apr49.9°F42.6°F+7.3°NCLIMGRID
1955May60.0°F55.1°F+4.9°NCLIMGRID
1955Jun62.3°F64.7°F-2.4°NCLIMGRID
1955Jul72.9°F70.4°F+2.5°NCLIMGRID
1955Aug70.9°F67.8°F+3.2°NCLIMGRID
1955Sep58.0°F57.7°F+0.3°NCLIMGRID
1955Oct47.6°F44.6°F+3.0°NCLIMGRID
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1984Jan11.6°F8.3°F+3.3°NCLIMGRID
1984Feb25.1°F14.3°F+10.8°NCLIMGRID
1984Mar22.1°F27.5°F-5.5°NCLIMGRID
1984Apr42.3°F42.6°F-0.3°NCLIMGRID
1984May53.6°F55.1°F-1.5°NCLIMGRID
1984Jun64.7°F64.7°F+0.0°NCLIMGRID
1984Jul69.6°F70.4°F-0.8°NCLIMGRID
1984Aug70.4°F67.8°F+2.6°NCLIMGRID
1984Sep53.5°F57.7°F-4.1°NCLIMGRID
1984Oct45.8°F44.6°F+1.3°NCLIMGRID
1984Nov30.7°F27.7°F+3.0°NCLIMGRID
1984Dec11.8°F13.5°F-1.7°NCLIMGRID
1985Jan6.9°F8.3°F-1.5°NCLIMGRID
1985Feb12.8°F14.3°F-1.5°NCLIMGRID
1985Mar33.2°F27.5°F+5.7°NCLIMGRID
1985Apr47.5°F42.6°F+5.0°NCLIMGRID
1985May59.9°F55.1°F+4.8°NCLIMGRID
1985Jun61.3°F64.7°F-3.4°NCLIMGRID
1985Jul69.9°F70.4°F-0.5°NCLIMGRID
1985Aug62.7°F67.8°F-5.0°NCLIMGRID
1985Sep54.3°F57.7°F-3.4°NCLIMGRID
1985Oct44.0°F44.6°F-0.6°NCLIMGRID
1985Nov16.0°F27.7°F-11.7°NCLIMGRID
1985Dec3.5°F13.5°F-10.0°NCLIMGRID
1986Jan14.7°F8.3°F+6.4°NCLIMGRID
1986Feb10.1°F14.3°F-4.2°NCLIMGRID
1986Mar30.5°F27.5°F+3.0°NCLIMGRID
1986Apr43.3°F42.6°F+0.7°NCLIMGRID
1986May55.6°F55.1°F+0.5°NCLIMGRID
1986Jun65.9°F64.7°F+1.3°NCLIMGRID
1986Jul70.0°F70.4°F-0.4°NCLIMGRID
1986Aug63.6°F67.8°F-4.1°NCLIMGRID
1986Sep55.1°F57.7°F-2.6°NCLIMGRID
1986Oct46.0°F44.6°F+1.5°NCLIMGRID
1986Nov24.3°F27.7°F-3.4°NCLIMGRID
1986Dec22.9°F13.5°F+9.4°NCLIMGRID
1987Jan20.0°F8.3°F+11.6°NCLIMGRID
1987Feb29.1°F14.3°F+14.8°NCLIMGRID
1987Mar31.1°F27.5°F+3.6°NCLIMGRID
1987Apr50.2°F42.6°F+7.7°NCLIMGRID
1987May60.1°F55.1°F+5.0°NCLIMGRID
1987Jun68.2°F64.7°F+3.5°NCLIMGRID
1987Jul72.7°F70.4°F+2.2°NCLIMGRID
1987Aug65.6°F67.8°F-2.2°NCLIMGRID
1987Sep58.9°F57.7°F+1.3°NCLIMGRID
1987Oct41.3°F44.6°F-3.3°NCLIMGRID
1987Nov33.5°F27.7°F+5.8°NCLIMGRID
1987Dec21.3°F13.5°F+7.7°NCLIMGRID
1988Jan7.0°F8.3°F-1.4°NCLIMGRID
1988Feb11.1°F14.3°F-3.2°NCLIMGRID
1988Mar29.7°F27.5°F+2.2°NCLIMGRID
1988Apr44.4°F42.6°F+1.8°NCLIMGRID
1988May61.6°F55.1°F+6.5°NCLIMGRID
1988Jun72.8°F64.7°F+8.1°NCLIMGRID
1988Jul74.2°F70.4°F+3.8°NCLIMGRID
1988Aug70.0°F67.8°F+2.3°NCLIMGRID
1988Sep58.0°F57.7°F+0.3°NCLIMGRID
1988Oct41.8°F44.6°F-2.7°NCLIMGRID
1988Nov27.8°F27.7°F+0.2°NCLIMGRID
1988Dec17.7°F13.5°F+4.2°NCLIMGRID
1989Jan16.5°F8.3°F+8.2°NCLIMGRID
1989Feb3.1°F14.3°F-11.2°NCLIMGRID
1989Mar22.3°F27.5°F-5.2°NCLIMGRID
1989Apr41.6°F42.6°F-1.0°NCLIMGRID
1989May55.1°F55.1°F+0.0°NCLIMGRID
1989Jun62.6°F64.7°F-2.1°NCLIMGRID
1989Jul73.0°F70.4°F+2.6°NCLIMGRID
1989Aug68.1°F67.8°F+0.3°NCLIMGRID
1989Sep57.7°F57.7°F+0.0°NCLIMGRID
1989Oct45.8°F44.6°F+1.2°NCLIMGRID
1989Nov25.2°F27.7°F-2.4°NCLIMGRID
1989Dec6.1°F13.5°F-7.5°NCLIMGRID
1990Jan23.8°F8.3°F+15.4°NCLIMGRID
1990Feb19.1°F14.3°F+4.7°NCLIMGRID
1990Mar32.9°F27.5°F+5.4°NCLIMGRID
1990Apr42.8°F42.6°F+0.3°NCLIMGRID
1990May52.9°F55.1°F-2.2°NCLIMGRID
1990Jun64.6°F64.7°F-0.1°NCLIMGRID
1990Jul67.7°F70.4°F-2.7°NCLIMGRID
1990Aug67.5°F67.8°F-0.2°NCLIMGRID
1990Sep61.7°F57.7°F+4.1°NCLIMGRID
1990Oct44.5°F44.6°F-0.1°NCLIMGRID
1990Nov32.8°F27.7°F+5.2°NCLIMGRID
1990Dec11.6°F13.5°F-1.9°NCLIMGRID
1991Jan9.0°F8.3°F+0.6°NCLIMGRID
1991Feb23.8°F14.3°F+9.5°NCLIMGRID
1991Mar30.5°F27.5°F+3.0°NCLIMGRID
1991Apr45.7°F42.6°F+3.1°NCLIMGRID
1991May58.0°F55.1°F+2.9°NCLIMGRID
1991Jun68.1°F64.7°F+3.5°NCLIMGRID
1991Jul68.7°F70.4°F-1.7°NCLIMGRID
1991Aug68.7°F67.8°F+1.0°NCLIMGRID
1991Sep56.7°F57.7°F-1.0°NCLIMGRID
1991Oct43.1°F44.6°F-1.4°NCLIMGRID
1991Nov22.3°F27.7°F-5.4°NCLIMGRID
1991Dec21.2°F13.5°F+7.6°NCLIMGRID
1992Jan19.5°F8.3°F+11.2°NCLIMGRID
1992Feb25.3°F14.3°F+10.9°NCLIMGRID
1992Mar32.7°F27.5°F+5.1°NCLIMGRID
1992Apr39.7°F42.6°F-2.9°NCLIMGRID
1992May56.9°F55.1°F+1.8°NCLIMGRID
1992Jun61.0°F64.7°F-3.7°NCLIMGRID
1992Jul61.3°F70.4°F-9.2°NCLIMGRID
1992Aug62.4°F67.8°F-5.4°NCLIMGRID
1992Sep56.4°F57.7°F-1.2°NCLIMGRID
1992Oct44.1°F44.6°F-0.4°NCLIMGRID
1992Nov24.6°F27.7°F-3.1°NCLIMGRID
1992Dec11.3°F13.5°F-2.2°NCLIMGRID
1993Jan8.2°F8.3°F-0.1°NCLIMGRID
1993Feb9.4°F14.3°F-4.9°NCLIMGRID
1993Mar24.1°F27.5°F-3.4°NCLIMGRID
1993Apr39.1°F42.6°F-3.5°NCLIMGRID
1993May53.5°F55.1°F-1.6°NCLIMGRID
1993Jun59.8°F64.7°F-4.8°NCLIMGRID
1993Jul65.2°F70.4°F-5.2°NCLIMGRID
1993Aug66.5°F67.8°F-1.2°NCLIMGRID
1993Sep52.6°F57.7°F-5.1°NCLIMGRID
1993Oct43.4°F44.6°F-1.1°NCLIMGRID
1993Nov24.8°F27.7°F-2.8°NCLIMGRID
1993Dec15.7°F13.5°F+2.1°NCLIMGRID
1994Jan-2.7°F8.3°F-11.0°NCLIMGRID
1994Feb5.2°F14.3°F-9.1°NCLIMGRID
1994Mar29.4°F27.5°F+1.9°NCLIMGRID
1994Apr42.3°F42.6°F-0.3°NCLIMGRID
1994May58.3°F55.1°F+3.2°NCLIMGRID
1994Jun65.5°F64.7°F+0.9°NCLIMGRID
1994Jul66.4°F70.4°F-4.0°NCLIMGRID
1994Aug64.6°F67.8°F-3.2°NCLIMGRID
1994Sep60.3°F57.7°F+2.6°NCLIMGRID
1994Oct47.7°F44.6°F+3.1°NCLIMGRID
1994Nov32.9°F27.7°F+5.3°NCLIMGRID
1994Dec19.9°F13.5°F+6.3°NCLIMGRID
1995Jan12.1°F8.3°F+3.7°NCLIMGRID
1995Feb15.2°F14.3°F+0.8°NCLIMGRID
1995Mar27.6°F27.5°F+0.1°NCLIMGRID
1995Apr36.0°F42.6°F-6.6°NCLIMGRID
1995May51.8°F55.1°F-3.3°NCLIMGRID
1995Jun66.1°F64.7°F+1.4°NCLIMGRID
1995Jul68.9°F70.4°F-1.5°NCLIMGRID
1995Aug70.8°F67.8°F+3.1°NCLIMGRID
1995Sep56.7°F57.7°F-0.9°NCLIMGRID
1995Oct42.7°F44.6°F-1.9°NCLIMGRID
1995Nov23.3°F27.7°F-4.4°NCLIMGRID
1995Dec14.8°F13.5°F+1.3°NCLIMGRID
1996Jan2.4°F8.3°F-5.9°NCLIMGRID
1996Feb13.5°F14.3°F-0.8°NCLIMGRID
1996Mar19.0°F27.5°F-8.5°NCLIMGRID
1996Apr37.4°F42.6°F-5.2°NCLIMGRID
1996May50.7°F55.1°F-4.4°NCLIMGRID
1996Jun65.4°F64.7°F+0.7°NCLIMGRID
1996Jul66.4°F70.4°F-4.0°NCLIMGRID
1996Aug68.1°F67.8°F+0.3°NCLIMGRID
1996Sep56.6°F57.7°F-1.1°NCLIMGRID
1996Oct45.3°F44.6°F+0.7°NCLIMGRID
1996Nov17.3°F27.7°F-10.3°NCLIMGRID
1996Dec5.6°F13.5°F-8.0°NCLIMGRID
1997Jan3.4°F8.3°F-4.9°NCLIMGRID
1997Feb14.4°F14.3°F+0.1°NCLIMGRID
1997Mar22.5°F27.5°F-5.0°NCLIMGRID
1997Apr36.4°F42.6°F-6.2°NCLIMGRID
1997May50.8°F55.1°F-4.3°NCLIMGRID
1997Jun66.5°F64.7°F+1.9°NCLIMGRID
1997Jul68.4°F70.4°F-2.0°NCLIMGRID
1997Aug65.7°F67.8°F-2.0°NCLIMGRID
1997Sep60.6°F57.7°F+2.9°NCLIMGRID
1997Oct47.6°F44.6°F+3.0°NCLIMGRID
1997Nov23.8°F27.7°F-3.9°NCLIMGRID
1997Dec22.3°F13.5°F+8.8°NCLIMGRID
1998Jan12.6°F8.3°F+4.3°NCLIMGRID
1998Feb26.4°F14.3°F+12.1°NCLIMGRID
1998Mar23.1°F27.5°F-4.4°NCLIMGRID
1998Apr44.8°F42.6°F+2.2°NCLIMGRID
1998May59.0°F55.1°F+3.9°NCLIMGRID
1998Jun61.0°F64.7°F-3.7°NCLIMGRID
1998Jul70.4°F70.4°F+0.0°NCLIMGRID
1998Aug69.3°F67.8°F+1.5°NCLIMGRID
1998Sep64.0°F57.7°F+6.3°NCLIMGRID
1998Oct47.0°F44.6°F+2.5°NCLIMGRID
1998Nov31.1°F27.7°F+3.4°NCLIMGRID
1998Dec21.2°F13.5°F+7.6°NCLIMGRID
1999Jan8.0°F8.3°F-0.3°NCLIMGRID
1999Feb25.1°F14.3°F+10.8°NCLIMGRID
1999Mar31.7°F27.5°F+4.1°NCLIMGRID
1999Apr43.9°F42.6°F+1.3°NCLIMGRID
1999May55.3°F55.1°F+0.2°NCLIMGRID
1999Jun64.2°F64.7°F-0.5°NCLIMGRID
1999Jul71.7°F70.4°F+1.3°NCLIMGRID
1999Aug67.6°F67.8°F-0.1°NCLIMGRID
1999Sep55.6°F57.7°F-2.1°NCLIMGRID
1999Oct44.7°F44.6°F+0.1°NCLIMGRID
1999Nov38.9°F27.7°F+11.2°NCLIMGRID
1999Dec23.4°F13.5°F+9.9°NCLIMGRID
2000Jan12.4°F8.3°F+4.0°NCLIMGRID
2000Feb24.6°F14.3°F+10.3°NCLIMGRID
2000Mar36.3°F27.5°F+8.8°NCLIMGRID
2000Apr41.6°F42.6°F-1.0°NCLIMGRID
2000May56.4°F55.1°F+1.3°NCLIMGRID
2000Jun62.6°F64.7°F-2.1°NCLIMGRID
2000Jul69.4°F70.4°F-1.1°NCLIMGRID
2000Aug68.9°F67.8°F+1.2°NCLIMGRID
2000Sep58.6°F57.7°F+0.9°NCLIMGRID
2000Oct48.3°F44.6°F+3.7°NCLIMGRID
2000Nov23.6°F27.7°F-4.1°NCLIMGRID
2000Dec2.0°F13.5°F-11.5°NCLIMGRID
2001Jan15.4°F8.3°F+7.1°NCLIMGRID
2001Feb4.7°F14.3°F-9.6°NCLIMGRID
2001Mar21.7°F27.5°F-5.8°NCLIMGRID
2001Apr41.5°F42.6°F-1.1°NCLIMGRID
2001May56.0°F55.1°F+0.9°NCLIMGRID
2001Jun64.5°F64.7°F-0.2°NCLIMGRID
2001Jul71.9°F70.4°F+1.4°NCLIMGRID
2001Aug70.4°F67.8°F+2.7°NCLIMGRID
2001Sep58.6°F57.7°F+0.9°NCLIMGRID
2001Oct44.7°F44.6°F+0.1°NCLIMGRID
2001Nov40.4°F27.7°F+12.7°NCLIMGRID
2001Dec20.7°F13.5°F+7.2°NCLIMGRID
2002Jan18.6°F8.3°F+10.3°NCLIMGRID
2002Feb25.9°F14.3°F+11.6°NCLIMGRID
2002Mar17.9°F27.5°F-9.7°NCLIMGRID
2002Apr40.4°F42.6°F-2.2°NCLIMGRID
2002May50.1°F55.1°F-5.0°NCLIMGRID
2002Jun67.6°F64.7°F+2.9°NCLIMGRID
2002Jul73.2°F70.4°F+2.7°NCLIMGRID
2002Aug67.2°F67.8°F-0.6°NCLIMGRID
2002Sep61.2°F57.7°F+3.5°NCLIMGRID
2002Oct36.7°F44.6°F-7.9°NCLIMGRID
2002Nov30.0°F27.7°F+2.3°NCLIMGRID
2002Dec20.4°F13.5°F+6.8°NCLIMGRID
2003Jan11.1°F8.3°F+2.8°NCLIMGRID
2003Feb10.4°F14.3°F-3.9°NCLIMGRID
2003Mar26.5°F27.5°F-1.0°NCLIMGRID
2003Apr44.6°F42.6°F+2.0°NCLIMGRID
2003May52.4°F55.1°F-2.7°NCLIMGRID
2003Jun62.8°F64.7°F-1.9°NCLIMGRID
2003Jul69.8°F70.4°F-0.7°NCLIMGRID
2003Aug70.8°F67.8°F+3.0°NCLIMGRID
2003Sep57.7°F57.7°F+0.0°NCLIMGRID
2003Oct48.7°F44.6°F+4.2°NCLIMGRID
2003Nov25.3°F27.7°F-2.4°NCLIMGRID
2003Dec20.9°F13.5°F+7.4°NCLIMGRID
2004Jan7.8°F8.3°F-0.6°NCLIMGRID
2004Feb16.9°F14.3°F+2.6°NCLIMGRID
2004Mar33.2°F27.5°F+5.6°NCLIMGRID
2004Apr44.5°F42.6°F+2.0°NCLIMGRID
2004May52.1°F55.1°F-3.0°NCLIMGRID
2004Jun60.2°F64.7°F-4.4°NCLIMGRID
2004Jul66.8°F70.4°F-3.6°NCLIMGRID
2004Aug62.3°F67.8°F-5.5°NCLIMGRID
2004Sep61.6°F57.7°F+3.9°NCLIMGRID
2004Oct46.2°F44.6°F+1.7°NCLIMGRID
2004Nov34.4°F27.7°F+6.7°NCLIMGRID
2004Dec20.6°F13.5°F+7.0°NCLIMGRID
2005Jan10.1°F8.3°F+1.8°NCLIMGRID
2005Feb21.7°F14.3°F+7.4°NCLIMGRID
2005Mar29.2°F27.5°F+1.7°NCLIMGRID
2005Apr46.3°F42.6°F+3.7°NCLIMGRID
2005May51.8°F55.1°F-3.3°NCLIMGRID
2005Jun66.8°F64.7°F+2.1°NCLIMGRID
2005Jul71.0°F70.4°F+0.5°NCLIMGRID
2005Aug66.7°F67.8°F-1.1°NCLIMGRID
2005Sep62.8°F57.7°F+5.2°NCLIMGRID
2005Oct46.3°F44.6°F+1.7°NCLIMGRID
2005Nov32.4°F27.7°F+4.7°NCLIMGRID
2005Dec15.5°F13.5°F+1.9°NCLIMGRID
2006Jan23.6°F8.3°F+15.2°NCLIMGRID
2006Feb13.9°F14.3°F-0.4°NCLIMGRID
2006Mar28.5°F27.5°F+0.9°NCLIMGRID
2006Apr47.9°F42.6°F+5.3°NCLIMGRID
2006May55.5°F55.1°F+0.4°NCLIMGRID
2006Jun65.1°F64.7°F+0.4°NCLIMGRID
2006Jul74.0°F70.4°F+3.6°NCLIMGRID
2006Aug69.0°F67.8°F+1.3°NCLIMGRID
2006Sep54.3°F57.7°F-3.3°NCLIMGRID
2006Oct41.6°F44.6°F-3.0°NCLIMGRID
2006Nov31.0°F27.7°F+3.3°NCLIMGRID
2006Dec24.2°F13.5°F+10.7°NCLIMGRID
2007Jan13.4°F8.3°F+5.1°NCLIMGRID
2007Feb7.4°F14.3°F-6.9°NCLIMGRID
2007Mar31.8°F27.5°F+4.2°NCLIMGRID
2007Apr38.5°F42.6°F-4.0°NCLIMGRID
2007May58.5°F55.1°F+3.4°NCLIMGRID
2007Jun66.5°F64.7°F+1.8°NCLIMGRID
2007Jul71.4°F70.4°F+0.9°NCLIMGRID
2007Aug66.8°F67.8°F-1.0°NCLIMGRID
2007Sep60.0°F57.7°F+2.3°NCLIMGRID
2007Oct48.7°F44.6°F+4.1°NCLIMGRID
2007Nov30.5°F27.7°F+2.8°NCLIMGRID
2007Dec12.0°F13.5°F-1.5°NCLIMGRID
2008Jan8.4°F8.3°F+0.1°NCLIMGRID
2008Feb11.7°F14.3°F-2.7°NCLIMGRID
2008Mar25.2°F27.5°F-2.4°NCLIMGRID
2008Apr37.9°F42.6°F-4.7°NCLIMGRID
2008May52.4°F55.1°F-2.7°NCLIMGRID
2008Jun61.7°F64.7°F-2.9°NCLIMGRID
2008Jul69.4°F70.4°F-1.1°NCLIMGRID
2008Aug68.3°F67.8°F+0.5°NCLIMGRID
2008Sep59.2°F57.7°F+1.5°NCLIMGRID
2008Oct44.9°F44.6°F+0.3°NCLIMGRID
2008Nov30.6°F27.7°F+2.9°NCLIMGRID
2008Dec7.8°F13.5°F-5.7°NCLIMGRID
2009Jan5.0°F8.3°F-3.4°NCLIMGRID
2009Feb14.3°F14.3°F+0.0°NCLIMGRID
2009Mar25.3°F27.5°F-2.2°NCLIMGRID
2009Apr40.6°F42.6°F-2.0°NCLIMGRID
2009May54.2°F55.1°F-0.9°NCLIMGRID
2009Jun62.2°F64.7°F-2.5°NCLIMGRID
2009Jul65.1°F70.4°F-5.3°NCLIMGRID
2009Aug64.6°F67.8°F-3.1°NCLIMGRID
2009Sep61.6°F57.7°F+3.9°NCLIMGRID
2009Oct38.2°F44.6°F-6.4°NCLIMGRID
2009Nov38.5°F27.7°F+10.8°NCLIMGRID
2009Dec9.8°F13.5°F-3.8°NCLIMGRID
2010Jan8.3°F8.3°F+0.0°NCLIMGRID
2010Feb10.9°F14.3°F-3.4°NCLIMGRID
2010Mar33.4°F27.5°F+5.9°NCLIMGRID
2010Apr49.7°F42.6°F+7.1°NCLIMGRID
2010May54.3°F55.1°F-0.8°NCLIMGRID
2010Jun65.1°F64.7°F+0.4°NCLIMGRID
2010Jul70.5°F70.4°F+0.0°NCLIMGRID
2010Aug71.3°F67.8°F+3.5°NCLIMGRID
2010Sep55.8°F57.7°F-1.8°NCLIMGRID
2010Oct48.6°F44.6°F+4.0°NCLIMGRID
2010Nov29.8°F27.7°F+2.2°NCLIMGRID
2010Dec10.1°F13.5°F-3.4°NCLIMGRID
2011Jan4.6°F8.3°F-3.8°NCLIMGRID
2011Feb10.2°F14.3°F-4.2°NCLIMGRID
2011Mar20.6°F27.5°F-6.9°NCLIMGRID
2011Apr39.4°F42.6°F-3.1°NCLIMGRID
2011May52.6°F55.1°F-2.5°NCLIMGRID
2011Jun64.1°F64.7°F-0.6°NCLIMGRID
2011Jul74.4°F70.4°F+3.9°NCLIMGRID
2011Aug68.9°F67.8°F+1.1°NCLIMGRID
2011Sep57.9°F57.7°F+0.3°NCLIMGRID
2011Oct49.6°F44.6°F+5.1°NCLIMGRID
2011Nov32.1°F27.7°F+4.5°NCLIMGRID
2011Dec24.0°F13.5°F+10.5°NCLIMGRID
2012Jan19.8°F8.3°F+11.4°NCLIMGRID
2012Feb22.1°F14.3°F+7.8°NCLIMGRID
2012Mar42.5°F27.5°F+14.9°NCLIMGRID
2012Apr46.9°F42.6°F+4.3°NCLIMGRID
2012May58.2°F55.1°F+3.1°NCLIMGRID
2012Jun67.7°F64.7°F+3.1°NCLIMGRID
2012Jul75.7°F70.4°F+5.3°NCLIMGRID
2012Aug67.9°F67.8°F+0.2°NCLIMGRID
2012Sep59.2°F57.7°F+1.5°NCLIMGRID
2012Oct43.6°F44.6°F-1.0°NCLIMGRID
2012Nov31.4°F27.7°F+3.7°NCLIMGRID
2012Dec15.7°F13.5°F+2.2°NCLIMGRID
2013Jan11.4°F8.3°F+3.0°NCLIMGRID
2013Feb13.6°F14.3°F-0.8°NCLIMGRID
2013Mar18.4°F27.5°F-9.2°NCLIMGRID
2013Apr31.0°F42.6°F-11.6°NCLIMGRID
2013May53.4°F55.1°F-1.7°NCLIMGRID
2013Jun63.9°F64.7°F-0.7°NCLIMGRID
2013Jul69.7°F70.4°F-0.8°NCLIMGRID
2013Aug69.2°F67.8°F+1.5°NCLIMGRID
2013Sep64.3°F57.7°F+6.7°NCLIMGRID
2013Oct43.1°F44.6°F-1.4°NCLIMGRID
2013Nov28.7°F27.7°F+1.0°NCLIMGRID
2013Dec6.8°F13.5°F-6.8°NCLIMGRID
2014Jan6.6°F8.3°F-1.8°NCLIMGRID
2014Feb5.8°F14.3°F-8.5°NCLIMGRID
2014Mar24.7°F27.5°F-2.8°NCLIMGRID
2014Apr39.9°F42.6°F-2.7°NCLIMGRID
2014May55.0°F55.1°F-0.1°NCLIMGRID
2014Jun65.0°F64.7°F+0.3°NCLIMGRID
2014Jul67.3°F70.4°F-3.1°NCLIMGRID
2014Aug67.4°F67.8°F-0.4°NCLIMGRID
2014Sep59.4°F57.7°F+1.7°NCLIMGRID
2014Oct47.9°F44.6°F+3.3°NCLIMGRID
2014Nov20.6°F27.7°F-7.0°NCLIMGRID
2014Dec19.7°F13.5°F+6.2°NCLIMGRID
2015Jan16.4°F8.3°F+8.1°NCLIMGRID
2015Feb9.6°F14.3°F-4.8°NCLIMGRID
2015Mar33.2°F27.5°F+5.6°NCLIMGRID
2015Apr45.7°F42.6°F+3.1°NCLIMGRID
2015May52.6°F55.1°F-2.5°NCLIMGRID
2015Jun65.8°F64.7°F+1.1°NCLIMGRID
2015Jul70.4°F70.4°F+0.0°NCLIMGRID
2015Aug66.9°F67.8°F-0.8°NCLIMGRID
2015Sep64.3°F57.7°F+6.7°NCLIMGRID
2015Oct49.1°F44.6°F+4.6°NCLIMGRID
2015Nov36.7°F27.7°F+9.1°NCLIMGRID
2015Dec21.4°F13.5°F+7.9°NCLIMGRID
2016Jan14.2°F8.3°F+5.9°NCLIMGRID
2016Feb21.6°F14.3°F+7.3°NCLIMGRID
2016Mar37.0°F27.5°F+9.4°NCLIMGRID
2016Apr43.4°F42.6°F+0.8°NCLIMGRID
2016May56.9°F55.1°F+1.8°NCLIMGRID
2016Jun68.2°F64.7°F+3.6°NCLIMGRID
2016Jul70.0°F70.4°F-0.4°NCLIMGRID
2016Aug68.8°F67.8°F+1.0°NCLIMGRID
2016Sep59.8°F57.7°F+2.1°NCLIMGRID
2016Oct47.7°F44.6°F+3.1°NCLIMGRID
2016Nov39.3°F27.7°F+11.7°NCLIMGRID
2016Dec12.1°F13.5°F-1.4°NCLIMGRID
2017Jan12.9°F8.3°F+4.6°NCLIMGRID
2017Feb24.9°F14.3°F+10.6°NCLIMGRID
2017Mar28.1°F27.5°F+0.6°NCLIMGRID
2017Apr43.2°F42.6°F+0.6°NCLIMGRID
2017May54.1°F55.1°F-1.1°NCLIMGRID
2017Jun65.3°F64.7°F+0.6°NCLIMGRID
2017Jul71.5°F70.4°F+1.1°NCLIMGRID
2017Aug64.2°F67.8°F-3.5°NCLIMGRID
2017Sep60.6°F57.7°F+3.0°NCLIMGRID
2017Oct45.9°F44.6°F+1.4°NCLIMGRID
2017Nov29.2°F27.7°F+1.5°NCLIMGRID
2017Dec16.0°F13.5°F+2.4°NCLIMGRID
2018Jan12.8°F8.3°F+4.4°NCLIMGRID
2018Feb7.9°F14.3°F-6.5°NCLIMGRID
2018Mar25.1°F27.5°F-2.4°NCLIMGRID
2018Apr31.8°F42.6°F-10.8°NCLIMGRID
2018May61.7°F55.1°F+6.6°NCLIMGRID
2018Jun68.9°F64.7°F+4.2°NCLIMGRID
2018Jul69.7°F70.4°F-0.8°NCLIMGRID
2018Aug67.8°F67.8°F+0.0°NCLIMGRID
2018Sep59.3°F57.7°F+1.6°NCLIMGRID
2018Oct39.9°F44.6°F-4.7°NCLIMGRID
2018Nov22.7°F27.7°F-5.0°NCLIMGRID
2018Dec20.6°F13.5°F+7.1°NCLIMGRID
2019Jan6.9°F8.3°F-1.5°NCLIMGRID
2019Feb1.6°F14.3°F-12.7°NCLIMGRID
2019Mar21.2°F27.5°F-6.3°NCLIMGRID
2019Apr41.2°F42.6°F-1.4°NCLIMGRID
2019May50.7°F55.1°F-4.4°NCLIMGRID
2019Jun65.9°F64.7°F+1.3°NCLIMGRID
2019Jul70.2°F70.4°F-0.3°NCLIMGRID
2019Aug65.3°F67.8°F-2.5°NCLIMGRID
2019Sep60.9°F57.7°F+3.3°NCLIMGRID
2019Oct39.6°F44.6°F-4.9°NCLIMGRID
2019Nov27.4°F27.7°F-0.3°NCLIMGRID
2019Dec16.9°F13.5°F+3.3°NCLIMGRID
2020Jan12.4°F8.3°F+4.1°NCLIMGRID
2020Feb15.7°F14.3°F+1.4°NCLIMGRID
2020Mar31.1°F27.5°F+3.5°NCLIMGRID
2020Apr39.6°F42.6°F-3.0°NCLIMGRID
2020May52.6°F55.1°F-2.5°NCLIMGRID
2020Jun69.2°F64.7°F+4.6°NCLIMGRID
2020Jul72.0°F70.4°F+1.5°NCLIMGRID
2020Aug69.8°F67.8°F+2.1°NCLIMGRID
2020Sep57.6°F57.7°F-0.1°NCLIMGRID
2020Oct39.0°F44.6°F-5.6°NCLIMGRID
2020Nov35.8°F27.7°F+8.1°NCLIMGRID
2020Dec22.5°F13.5°F+8.9°NCLIMGRID
2021Jan20.5°F8.3°F+12.1°NCLIMGRID
2021Feb7.1°F14.3°F-7.2°NCLIMGRID
2021Mar36.6°F27.5°F+9.1°NCLIMGRID
2021Apr41.3°F42.6°F-1.2°NCLIMGRID
2021May55.1°F55.1°F+0.0°NCLIMGRID
2021Jun71.2°F64.7°F+6.6°NCLIMGRID
2021Jul72.6°F70.4°F+2.1°NCLIMGRID
2021Aug69.3°F67.8°F+1.5°NCLIMGRID
2021Sep62.7°F57.7°F+5.0°NCLIMGRID
2021Oct50.1°F44.6°F+5.5°NCLIMGRID
2021Nov33.8°F27.7°F+6.1°NCLIMGRID
2021Dec17.7°F13.5°F+4.2°NCLIMGRID
2022Jan7.3°F8.3°F-1.0°NCLIMGRID
2022Feb9.8°F14.3°F-4.5°NCLIMGRID
2022Mar27.1°F27.5°F-0.4°NCLIMGRID
2022Apr35.0°F42.6°F-7.5°NCLIMGRID
2022May54.4°F55.1°F-0.7°NCLIMGRID
2022Jun68.3°F64.7°F+3.7°NCLIMGRID
2022Jul71.1°F70.4°F+0.6°NCLIMGRID
2022Aug68.7°F67.8°F+0.9°NCLIMGRID
2022Sep62.3°F57.7°F+4.7°NCLIMGRID
2022Oct47.1°F44.6°F+2.6°NCLIMGRID
2022Nov27.8°F27.7°F+0.1°NCLIMGRID
2022Dec10.8°F13.5°F-2.7°NCLIMGRID
2023Jan12.6°F8.3°F+4.3°NCLIMGRID
2023Feb14.3°F14.3°F+0.0°NCLIMGRID
2023Mar17.5°F27.5°F-10.0°NCLIMGRID
2023Apr35.0°F42.6°F-7.5°NCLIMGRID
2023May60.0°F55.1°F+4.9°NCLIMGRID
2023Jun70.3°F64.7°F+5.6°NCLIMGRID
2023Jul68.6°F70.4°F-1.8°NCLIMGRID
2023Aug69.9°F67.8°F+2.1°NCLIMGRID
2023Sep63.4°F57.7°F+5.8°NCLIMGRID
2023Oct46.2°F44.6°F+1.6°NCLIMGRID
2023Nov34.3°F27.7°F+6.6°NCLIMGRID
2023Dec29.3°F13.5°F+15.8°NCLIMGRID
2024Jan13.4°F8.3°F+5.1°NCLIMGRID
2024Feb28.7°F14.3°F+14.4°NCLIMGRID
2024Mar30.2°F27.5°F+2.7°NCLIMGRID
2024Apr44.1°F42.6°F+1.5°NCLIMGRID
2024May55.8°F55.1°F+0.7°NCLIMGRID
2024Jun65.1°F64.7°F+0.5°NCLIMGRID
2024Jul70.4°F70.4°F+0.0°NCLIMGRID
2024Aug66.3°F67.8°F-1.4°NCLIMGRID
2024Sep65.3°F57.7°F+7.6°NCLIMGRID
2024Oct50.9°F44.6°F+6.4°NCLIMGRID
2024Nov31.5°F27.7°F+3.9°NCLIMGRID
2024Dec19.0°F13.5°F+5.4°NCLIMGRID
2025Jan11.3°F8.3°F+2.9°NCLIMGRID
2025Feb10.0°F14.3°F-4.3°NCLIMGRID
2025Mar33.7°F27.5°F+6.2°NCLIMGRID
2025Apr43.0°F42.6°F+0.4°NCLIMGRID
2025May56.0°F55.1°F+0.9°NCLIMGRID
2025Jun64.7°F64.7°F+0.1°NCLIMGRID
2025Jul69.8°F70.4°F-0.6°NCLIMGRID
2025Aug67.5°F67.8°F-0.2°NCLIMGRID
2025Sep63.3°F57.7°F+5.6°NCLIMGRID
2025Oct51.1°F44.6°F+6.5°NCLIMGRID
2025Nov34.4°F27.7°F+6.7°NCLIMGRID
2025Dec16.2°F13.5°F+2.7°NCLIMGRID
2026Jan11.3°F8.3°F+3.0°NCLIMGRID
2026Feb24.0°F14.3°F+9.7°NCLIMGRID

Showing 1,154 of 1,154 records. = gap-filled data

This table shows raw (unsmoothed) monthly anomalies. The spiral applies a 12-month moving average to highlight long-term trends.

Methodology

Methodology How we calculate anomalies

1. Data Acquisition

We use NOAA's nClimGrid dataset, which provides homogenized temperature data on a 5km grid, for the nearest grid point with historical coverage starting from 1930.

Temperature metric: Monthly average temperature (TAVG). When TAVG is unavailable, we use (TMAX + TMIN) / 2 as a proxy.

2. Gap Filling

Some months may have missing data. We fill gaps using data from nearby weather stations (within ~200km).

10

Initial gaps

0

Filled

10

Unfillable

3. Baseline Calculation

The baseline is a 25-year window dynamically centered on the data's midpoint, requiring at least 90% coverage. If coverage is insufficient, the window shifts forward in 5-year increments until the threshold is met.

Period: 1966 – 1991 (100% coverage)

MonthBaselineYears
January8.3°F26/26
February14.3°F26/26
March27.5°F26/26
April42.6°F26/26
May55.1°F26/26
June64.7°F26/26
July70.4°F26/26
August67.8°F26/26
September57.7°F26/26
October44.6°F26/26
November27.7°F26/26
December13.5°F26/26

4. Anomaly Calculation

For each month, we calculate how far it deviates from the baseline. These are raw monthly anomalies.

Anomaly = Actual Temperature − Baseline[month]

5. Smoothing

The spiral visualization applies a 12-month centered moving average to reduce month-to-month noise and highlight multi-year warming trends. The spiral shows smoothed values, not raw anomalies.

6. Reading the Visualizations

Spiral: A 3D helix where each loop represents one year. The radius indicates the smoothed temperature anomaly, and colors range from blue (cold) to red (warm). The top view shows the annual cycle, while the side view shows time progression.

Stripes: Each stripe represents one year's average anomaly (the mean of all monthly anomalies for that year). No additional smoothing is applied; yearly aggregation naturally reduces noise.

Color scale: Color bounds are set to the 5th and 95th percentile of anomalies to avoid outlier washout, with a neutral zone of approximately ±0.1°C.

7. Data Quality Notes

Frequently Asked Questions

Is Ortley, South Dakota getting warmer?

Based on 96+ years of NOAA temperature records, Ortley has changed at a rate of approximately 0.17°F per decade. This trend is calculated from monthly temperature anomalies relative to the location's historical baseline period.

What was the warmest year on record in Ortley?

The warmest year on record in Ortley was 1987, based on average annual temperature anomaly from NOAA station data.

Where does the temperature data for Ortley come from?

Data comes from the nClimGrid 5km Grid Point weather station, part of NOAA's Global Historical Climatology Network. This station has recorded 96+ years of temperature observations used to build Ortley's climate profile.

How are the climate visualizations for Ortley created?

Three visualizations are generated from Ortley's NOAA data: a climate spiral showing monthly temperature anomalies as concentric rings (inspired by NASA), warming stripes where each vertical stripe represents one year's temperature anomaly, and a linear trend chart showing the long-term trajectory.

Can I download Ortley's temperature data?

Yes. The interactive data table on this page shows every monthly temperature reading in Ortley's record. You can filter by decade and download the complete dataset as a CSV file for your own analysis.

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