Climate Change in Sunnyvale, California

96+ years of recorded temperature data show Sunnyvale is warming.

Based on our analysis of 96 years of temperature data near Sunnyvale, CA, this area shows a warming trend of approximately +0.3°F per decade. 10 of the last 10 years recorded above-average temperatures, and 2014 was the warmest year on record at +3.5°F above the historical baseline.

Key Climate Facts

Rate of Change

+0.3°F

per decade

Warmest Year

2014

+3.5°F anomaly

Recent Warm Years

10 / 10

above-average years

Decade Shift

+3.0°F

2020s vs 1930s

Compared to the National Average

Sunnyvale is warming 0.1°F/decade faster than the national average.

National: +0.20°F/decade
Sunnyvale: +0.34°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 Sunnyvale's long-term warming trend.

Temperature anomaly spiral for Sunnyvale, California
Climate spiral: monthly temperature anomalies from 96+ years of NOAA records for Sunnyvale, CA.

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 Sunnyvale, California
Warming stripes: each stripe is one year of average temperature anomaly for Sunnyvale, CA.

Temperature Trend

Annual temperature anomalies plotted over time with a linear regression trend line. The slope of +0.34°F per decade quantifies the rate of change.

Temperature trend chart for Sunnyvale, California
Linear trend: annual temperature anomalies with trend line for Sunnyvale, CA.

Temperature by Decade

1930s
-0.75°F
1940s
-0.89°F
1950s
-0.69°F
1960s
-0.67°F
1970s
-0.43°F
1980s
+0.46°F
1990s
+0.88°F
2000s
+0.97°F
2010s
+1.55°F
2020s
+2.27°F

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

Anomaly Scale

-3.2°F Colder Normal +3.8°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 Sunnyvale, CA. Filter by decade or download as CSV.

Data Sources & Audit

Station
nClimGrid 5km Grid Point
Distance
0.6 mi
Coverage
99.1%
Records
1,154
Range
1930-01 – 2026-02
Full Data Audit 1,154 records
YearMonthTempBaselineAnomalySourceGap
1930Jan47.6°F48.8°F-1.2°NCLIMGRID
1930Feb54.4°F52.4°F+2.1°NCLIMGRID
1930Mar55.0°F53.9°F+1.1°NCLIMGRID
1930Apr58.3°F56.5°F+1.7°NCLIMGRID
1930May56.2°F60.6°F-4.4°NCLIMGRID
1930Jun62.9°F64.5°F-1.6°NCLIMGRID
1930Jul63.1°F66.6°F-3.5°NCLIMGRID
1930Aug63.8°F66.5°F-2.7°NCLIMGRID
1930Sep61.6°F65.7°F-4.1°NCLIMGRID
1930Oct60.5°F61.4°F-0.9°NCLIMGRID
1930Nov53.5°F54.3°F-0.8°NCLIMGRID
1930Dec47.4°F48.9°F-1.5°NCLIMGRID
1931Jan49.3°F48.8°F+0.4°NCLIMGRID
1931Feb53.4°F52.4°F+1.1°NCLIMGRID
1931Mar54.8°F53.9°F+0.9°NCLIMGRID
1931Apr58.3°F56.5°F+1.7°NCLIMGRID
1931May64.2°F60.6°F+3.6°NCLIMGRID
1931Jun63.4°F64.5°F-1.1°NCLIMGRID
1931Jul68.8°F66.6°F+2.2°NCLIMGRID
1931Aug66.8°F66.5°F+0.3°NCLIMGRID
1931Sep63.6°F65.7°F-2.1°NCLIMGRID
1931Oct59.0°F61.4°F-2.4°NCLIMGRID
1931Nov51.5°F54.3°F-2.8°NCLIMGRID
1931Dec47.3°F48.9°F-1.5°NCLIMGRID
1932Jan46.8°F48.8°F-2.1°NCLIMGRID
1932Feb49.0°F52.4°F-3.3°NCLIMGRID
1932Mar54.8°F53.9°F+0.9°NCLIMGRID
1932Apr54.6°F56.5°F-1.9°NCLIMGRID
1932May60.0°F60.6°F-0.6°NCLIMGRID
1932Jun63.4°F64.5°F-1.0°NCLIMGRID
1932Jul64.7°F66.6°F-1.9°NCLIMGRID
1932Aug65.0°F66.5°F-1.5°NCLIMGRID
1932Sep65.6°F65.7°F-0.1°NCLIMGRID
1932Oct61.0°F61.4°F-0.5°NCLIMGRID
1932Nov58.1°F54.3°F+3.8°NCLIMGRID
1932Dec44.7°F48.9°F-4.1°NCLIMGRID
1933Jan44.7°F48.8°F-4.2°NCLIMGRID
1933Feb47.9°F52.4°F-4.5°NCLIMGRID
1933Mar53.3°F53.9°F-0.6°NCLIMGRID
1933Apr55.0°F56.5°F-1.5°NCLIMGRID
1933May55.7°F60.6°F-5.0°NCLIMGRID
1933Jun60.4°F64.5°F-4.1°NCLIMGRID
1933Jul66.2°F66.6°F-0.4°NCLIMGRID
1933Aug65.4°F66.5°F-1.1°NCLIMGRID
1933Sep62.5°F65.7°F-3.1°NCLIMGRID
1933Oct63.6°F61.4°F+2.2°NCLIMGRID
1933Nov56.2°F54.3°F+1.9°NCLIMGRID
1933Dec48.7°F48.9°F-0.2°NCLIMGRID
1934Jan49.4°F48.8°F+0.6°NCLIMGRID
1934Feb53.5°F52.4°F+1.1°NCLIMGRID
1934Mar58.9°F53.9°F+5.0°NCLIMGRID
1934Apr59.1°F56.5°F+2.6°NCLIMGRID
1934May61.8°F60.6°F+1.2°NCLIMGRID
1934Jun63.6°F64.5°F-0.9°NCLIMGRID
1934Jul64.9°F66.6°F-1.7°NCLIMGRID
1934Aug65.2°F66.5°F-1.4°NCLIMGRID
1934Sep64.7°F65.7°F-1.0°NCLIMGRID
1934Oct60.4°F61.4°F-1.0°NCLIMGRID
1934Nov55.6°F54.3°F+1.3°NCLIMGRID
1934Dec49.6°F48.9°F+0.7°NCLIMGRID
1935Jan47.8°F48.8°F-1.1°NCLIMGRID
1935Feb51.0°F52.4°F-1.4°NCLIMGRID
1935Mar49.0°F53.9°F-4.9°NCLIMGRID
1935Apr56.1°F56.5°F-0.4°NCLIMGRID
1935May59.2°F60.6°F-1.4°NCLIMGRID
1935Jun64.3°F64.5°F-0.2°NCLIMGRID
1935Jul65.0°F66.6°F-1.6°NCLIMGRID
1935Aug65.3°F66.5°F-1.3°NCLIMGRID
1935Sep63.2°F65.7°F-2.4°NCLIMGRID
1935Oct58.6°F61.4°F-2.8°NCLIMGRID
1935Nov51.4°F54.3°F-2.9°NCLIMGRID
1935Dec49.2°F48.9°F+0.4°NCLIMGRID
1936Jan51.0°F48.8°F+2.2°NCLIMGRID
1936Feb51.1°F52.4°F-1.3°NCLIMGRID
1936Mar54.0°F53.9°F+0.1°NCLIMGRID
1936Apr57.2°F56.5°F+0.7°NCLIMGRID
1936May62.3°F60.6°F+1.6°NCLIMGRID
1936Jun64.1°F64.5°F-0.4°NCLIMGRID
1936Jul66.8°F66.6°F+0.2°NCLIMGRID
1936Aug66.6°F66.5°F+0.0°NCLIMGRID
1936Sep65.8°F65.7°F+0.1°NCLIMGRID
1936Oct62.1°F61.4°F+0.7°NCLIMGRID
1936Nov53.8°F54.3°F-0.5°NCLIMGRID
1936Dec47.6°F48.9°F-1.3°NCLIMGRID
1937Jan41.2°F48.8°F-7.6°NCLIMGRID
1937Feb48.6°F52.4°F-3.8°NCLIMGRID
1937Mar53.3°F53.9°F-0.6°NCLIMGRID
1937Apr54.1°F56.5°F-2.4°NCLIMGRID
1937May59.9°F60.6°F-0.7°NCLIMGRID
1937Jun64.6°F64.5°F+0.1°NCLIMGRID
1937Jul66.8°F66.6°F+0.2°NCLIMGRID
1937Aug66.1°F66.5°F-0.4°NCLIMGRID
1937Sep64.6°F65.7°F-1.1°NCLIMGRID
1937Oct62.0°F61.4°F+0.6°NCLIMGRID
1937Nov55.7°F54.3°F+1.3°NCLIMGRID
1937Dec50.7°F48.9°F+1.8°NCLIMGRID
1938Jan48.8°F48.8°F+0.0°NCLIMGRID
1938Feb51.0°F52.4°F-1.4°NCLIMGRID
1938Mar50.7°F53.9°F-3.2°NCLIMGRID
1938Apr54.8°F56.5°F-1.8°NCLIMGRID
1938May59.9°F60.6°F-0.7°NCLIMGRID
1938Jun63.3°F64.5°F-1.2°NCLIMGRID
1938Jul66.3°F66.6°F-0.3°NCLIMGRID
1938Aug65.2°F66.5°F-1.3°NCLIMGRID
1938Sep64.7°F65.7°F-1.0°NCLIMGRID
1938Oct59.8°F61.4°F-1.6°NCLIMGRID
1938Nov52.2°F54.3°F-2.1°NCLIMGRID
1938Dec50.4°F48.9°F+1.6°NCLIMGRID
1939Jan48.0°F48.8°F-0.8°NCLIMGRID
1939Feb48.1°F52.4°F-4.2°NCLIMGRID
1939Mar51.6°F53.9°F-2.3°NCLIMGRID
1939Apr58.0°F56.5°F+1.4°NCLIMGRID
1939May60.3°F60.6°F-0.3°NCLIMGRID
1939Jun63.1°F64.5°F-1.4°NCLIMGRID
1939Jul65.4°F66.6°F-1.2°NCLIMGRID
1939Aug65.2°F66.5°F-1.3°NCLIMGRID
1939Sep67.7°F65.7°F+2.1°NCLIMGRID
1939Oct61.1°F61.4°F-0.4°NCLIMGRID
1939Nov54.9°F54.3°F+0.6°NCLIMGRID
1939Dec51.7°F48.9°F+2.8°NCLIMGRID
1940Jan50.8°F48.8°F+2.0°NCLIMGRID
1940Feb53.3°F52.4°F+1.0°NCLIMGRID
1940Mar55.5°F53.9°F+1.6°NCLIMGRID
1940Apr57.7°F56.5°F+1.2°NCLIMGRID
1940May60.9°F60.6°F+0.3°NCLIMGRID
1940Jun65.2°F64.5°F+0.7°NCLIMGRID
1940Jul66.2°F66.6°F-0.4°NCLIMGRID
1940Aug65.6°F66.5°F-0.9°NCLIMGRID
1940Sep65.0°F65.7°F-0.6°NCLIMGRID
1940Oct61.2°F61.4°F-0.2°NCLIMGRID
1940Nov53.4°F54.3°F-0.9°NCLIMGRID
1940Dec52.2°F48.9°F+3.3°NCLIMGRID
1941Jan51.2°F48.8°F+2.3°NCLIMGRID
1941Feb53.5°F52.4°F+1.2°NCLIMGRID
1941Mar56.0°F53.9°F+2.1°NCLIMGRID
1941Apr55.2°F56.5°F-1.3°NCLIMGRID
1941May62.3°F60.6°F+1.7°NCLIMGRID
1941Jun63.0°F64.5°F-1.5°NCLIMGRID
1941Jul67.4°F66.6°F+0.8°NCLIMGRID
1941Aug64.7°F66.5°F-1.9°NCLIMGRID
1941Sep64.3°F65.7°F-1.4°NCLIMGRID
1941Oct59.2°F61.4°F-2.3°NCLIMGRID
1941Nov55.5°F54.3°F+1.2°NCLIMGRID
1941Dec50.7°F48.9°F+1.8°NCLIMGRID
1942Jan48.6°F48.8°F-0.2°NCLIMGRID
1942Feb50.2°F52.4°F-2.2°NCLIMGRID
1942Mar52.5°F53.9°F-1.4°NCLIMGRID
1942Apr55.1°F56.5°F-1.5°NCLIMGRID
1942May58.2°F60.6°F-2.4°NCLIMGRID
1942Jun63.0°F64.5°F-1.5°NCLIMGRID
1942Jul66.6°F66.6°F+0.0°NCLIMGRID
1942Aug65.4°F66.5°F-1.1°NCLIMGRID
1942Sep63.1°F65.7°F-2.6°NCLIMGRID
1942Oct60.7°F61.4°F-0.8°NCLIMGRID
1942Nov53.3°F54.3°F-1.0°NCLIMGRID
1942Dec49.1°F48.9°F+0.3°NCLIMGRID
1943Jan48.5°F48.8°F-0.3°NCLIMGRID
1943Feb52.4°F52.4°F+0.0°NCLIMGRID
1943Mar54.6°F53.9°F+0.7°NCLIMGRID
1943Apr56.8°F56.5°F+0.3°NCLIMGRID
1943May61.4°F60.6°F+0.8°NCLIMGRID
1943Jun61.7°F64.5°F-2.8°NCLIMGRID
1943Jul65.5°F66.6°F-1.1°NCLIMGRID
1943Aug64.7°F66.5°F-1.9°NCLIMGRID
1943Sep66.4°F65.7°F+0.7°NCLIMGRID
1943Oct60.2°F61.4°F-1.3°NCLIMGRID
1943Nov55.2°F54.3°F+0.9°NCLIMGRID
1943Dec50.3°F48.9°F+1.5°NCLIMGRID
1944Jan49.1°F48.8°F+0.3°NCLIMGRID
1944Feb49.1°F52.4°F-3.2°NCLIMGRID
1944Mar53.4°F53.9°F-0.5°NCLIMGRID
1944Apr53.2°F56.5°F-3.3°NCLIMGRID
1944May59.9°F60.6°F-0.7°NCLIMGRID
1944Jun62.0°F64.5°F-2.5°NCLIMGRID
1944Jul64.5°F66.6°F-2.1°NCLIMGRID
1944Aug64.8°F66.5°F-1.7°NCLIMGRID
1944Sep65.1°F65.7°F-0.5°NCLIMGRID
1944Oct61.7°F61.4°F+0.3°NCLIMGRID
1944Nov52.4°F54.3°F-1.9°NCLIMGRID
1944Dec50.5°F48.9°F+1.7°NCLIMGRID
1945Jan46.8°F48.8°F-2.0°NCLIMGRID
1945Feb51.3°F52.4°F-1.0°NCLIMGRID
1945Mar49.5°F53.9°F-4.4°NCLIMGRID
1945Apr55.7°F56.5°F-0.8°NCLIMGRID
1945May58.3°F60.6°F-2.3°NCLIMGRID
1945Jun65.4°F64.5°F+0.9°NCLIMGRID
1945Jul67.2°F66.6°F+0.6°NCLIMGRID
1945Aug64.7°F66.5°F-1.9°NCLIMGRID
1945Sep65.6°F65.7°F-0.1°NCLIMGRID
1945Oct61.6°F61.4°F+0.2°NCLIMGRID
1945Nov53.7°F54.3°F-0.6°NCLIMGRID
1945Dec50.3°F48.9°F+1.4°NCLIMGRID
1946Jan47.3°F48.8°F-1.5°NCLIMGRID
1946Feb48.1°F52.4°F-4.3°NCLIMGRID
1946Mar52.0°F53.9°F-1.9°NCLIMGRID
1946Apr55.8°F56.5°F-0.8°NCLIMGRID
1946May59.3°F60.6°F-1.3°NCLIMGRID
1946Jun62.6°F64.5°F-1.8°NCLIMGRID
1946Jul66.2°F66.6°F-0.4°NCLIMGRID
1946Aug64.8°F66.5°F-1.8°NCLIMGRID
1946Sep64.9°F65.7°F-0.8°NCLIMGRID
1946Oct58.7°F61.4°F-2.7°NCLIMGRID
1946Nov51.3°F54.3°F-3.0°NCLIMGRID
1946Dec48.7°F48.9°F-0.2°NCLIMGRID
1947Jan44.0°F48.8°F-4.8°NCLIMGRID
1947Feb52.2°F52.4°F-0.2°NCLIMGRID
1947Mar55.2°F53.9°F+1.3°NCLIMGRID
1947Apr58.8°F56.5°F+2.2°NCLIMGRID
1947May62.3°F60.6°F+1.7°NCLIMGRID
1947Jun66.1°F64.5°F+1.7°NCLIMGRID
1947Jul64.5°F66.6°F-2.1°NCLIMGRID
1947Aug65.7°F66.5°F-0.8°NCLIMGRID
1947Sep65.2°F65.7°F-0.5°NCLIMGRID
1947Oct61.1°F61.4°F-0.3°NCLIMGRID
1947Nov50.6°F54.3°F-3.7°NCLIMGRID
1947Dec47.7°F48.9°F-1.2°NCLIMGRID
1948Jan50.8°F48.8°F+1.9°NCLIMGRID
1948Feb48.8°F52.4°F-3.6°NCLIMGRID
1948Mar50.2°F53.9°F-3.7°NCLIMGRID
1948Apr53.8°F56.5°F-2.7°NCLIMGRID
1948May57.2°F60.6°F-3.4°NCLIMGRID
1948Jun63.3°F64.5°F-1.2°NCLIMGRID
1948Jul65.1°F66.6°F-1.5°NCLIMGRID
1948Aug65.2°F66.5°F-1.3°NCLIMGRID
1948Sep63.0°F65.7°F-2.7°NCLIMGRID
1948Oct60.0°F61.4°F-1.4°NCLIMGRID
1948Nov53.2°F54.3°F-1.1°NCLIMGRID
1948Dec45.0°F48.9°F-3.8°NCLIMGRID
1949Jan40.8°F48.8°F-8.0°NCLIMGRID
1949Feb46.9°F52.4°F-5.5°NCLIMGRID
1949Mar52.1°F53.9°F-1.8°NCLIMGRID
1949Apr57.4°F56.5°F+0.8°NCLIMGRID
1949May59.4°F60.6°F-1.2°NCLIMGRID
1949Jun64.6°F64.5°F+0.1°NCLIMGRID
1949Jul64.2°F66.6°F-2.4°NCLIMGRID
1949Aug63.6°F66.5°F-3.0°NCLIMGRID
1949Sep65.1°F65.7°F-0.6°NCLIMGRID
1949Oct58.1°F61.4°F-3.4°NCLIMGRID
1949Nov57.0°F54.3°F+2.7°NCLIMGRID
1949Dec46.8°F48.9°F-2.1°NCLIMGRID
1950Jan44.8°F48.8°F-4.0°NCLIMGRID
1950Feb49.9°F52.4°F-2.5°NCLIMGRID
1950Mar51.7°F53.9°F-2.2°NCLIMGRID
1950Apr56.9°F56.5°F+0.4°NCLIMGRID
1950May58.9°F60.6°F-1.7°NCLIMGRID
1950Jun61.5°F64.5°F-3.0°NCLIMGRID
1950Jul65.9°F66.6°F-0.7°NCLIMGRID
1950Aug66.6°F66.5°F+0.1°NCLIMGRID
1950Sep65.5°F65.7°F-0.2°NCLIMGRID
1950Oct61.2°F61.4°F-0.2°NCLIMGRID
1950Nov58.9°F54.3°F+4.6°NCLIMGRID
1950Dec52.3°F48.9°F+3.4°NCLIMGRID
1951Jan48.6°F48.8°F-0.2°NCLIMGRID
1951Feb50.2°F52.4°F-2.2°NCLIMGRID
1951Mar52.4°F53.9°F-1.5°NCLIMGRID
1951Apr54.5°F56.5°F-2.0°NCLIMGRID
1951May60.3°F60.6°F-0.3°NCLIMGRID
1951Jun62.2°F64.5°F-2.3°NCLIMGRID
1951Jul64.1°F66.6°F-2.5°NCLIMGRID
1951Aug64.8°F66.5°F-1.7°NCLIMGRID
1951Sep64.0°F65.7°F-1.7°NCLIMGRID
1951Oct60.4°F61.4°F-1.0°NCLIMGRID
1951Nov54.6°F54.3°F+0.3°NCLIMGRID
1951Dec47.5°F48.9°F-1.4°NCLIMGRID
1952Jan46.3°F48.8°F-2.5°NCLIMGRID
1952Feb50.3°F52.4°F-2.1°NCLIMGRID
1952Mar50.2°F53.9°F-3.7°NCLIMGRID
1952Apr56.2°F56.5°F-0.4°NCLIMGRID
1952May60.7°F60.6°F+0.0°NCLIMGRID
1952Jun60.6°F64.5°F-3.9°NCLIMGRID
1952Jul66.5°F66.6°F-0.1°NCLIMGRID
1952Aug64.5°F66.5°F-2.0°NCLIMGRID
1952Sep66.0°F65.7°F+0.3°NCLIMGRID
1952Oct61.4°F61.4°F+0.0°NCLIMGRID
1952Nov52.1°F54.3°F-2.2°NCLIMGRID
1952Dec49.6°F48.9°F+0.7°NCLIMGRID
1953Jan52.0°F48.8°F+3.2°NCLIMGRID
1953Feb50.6°F52.4°F-1.7°NCLIMGRID
1953Mar51.6°F53.9°F-2.3°NCLIMGRID
1953Apr54.3°F56.5°F-2.3°NCLIMGRID
1953May57.4°F60.6°F-3.2°NCLIMGRID
1953Jun60.9°F64.5°F-3.6°NCLIMGRID
1953Jul66.1°F66.6°F-0.5°NCLIMGRID
1953Aug64.1°F66.5°F-2.4°NCLIMGRID
1953Sep66.5°F65.7°F+0.8°NCLIMGRID
1953Oct59.9°F61.4°F-1.5°NCLIMGRID
1953Nov55.5°F54.3°F+1.2°NCLIMGRID
1953Dec50.7°F48.9°F+1.9°NCLIMGRID
1954Jan48.7°F48.8°F-0.2°NCLIMGRID
1954Feb51.8°F52.4°F-0.5°NCLIMGRID
1954Mar50.5°F53.9°F-3.4°NCLIMGRID
1954Apr58.6°F56.5°F+2.0°NCLIMGRID
1954May60.0°F60.6°F-0.6°NCLIMGRID
1954Jun62.6°F64.5°F-1.9°NCLIMGRID
1954Jul66.5°F66.6°F-0.1°NCLIMGRID
1954Aug63.2°F66.5°F-3.4°NCLIMGRID
1954Sep63.4°F65.7°F-2.2°NCLIMGRID
1954Oct60.0°F61.4°F-1.4°NCLIMGRID
1954Nov54.3°F54.3°F+0.0°NCLIMGRID
1954Dec48.2°F48.9°F-0.7°NCLIMGRID
1955Jan45.1°F48.8°F-3.7°NCLIMGRID
1955Feb49.0°F52.4°F-3.3°NCLIMGRID
1955Mar52.7°F53.9°F-1.2°NCLIMGRID
1955Apr51.5°F56.5°F-5.0°NCLIMGRID
1955May59.6°F60.6°F-1.0°NCLIMGRID
1955Jun62.1°F64.5°F-2.4°NCLIMGRID
1955Jul62.9°F66.6°F-3.7°NCLIMGRID
1955Aug64.4°F66.5°F-2.2°NCLIMGRID
1955Sep64.1°F65.7°F-1.5°NCLIMGRID
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1984Mar57.0°F53.9°F+3.1°NCLIMGRID
1984Apr55.5°F56.5°F-1.0°NCLIMGRID
1984May63.3°F60.6°F+2.7°NCLIMGRID
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1985Feb52.4°F52.4°F+0.0°NCLIMGRID
1985Mar51.1°F53.9°F-2.8°NCLIMGRID
1985Apr60.3°F56.5°F+3.8°NCLIMGRID
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1986Jan53.9°F48.8°F+5.1°NCLIMGRID
1986Feb55.5°F52.4°F+3.2°NCLIMGRID
1986Mar57.7°F53.9°F+3.8°NCLIMGRID
1986Apr57.2°F56.5°F+0.7°NCLIMGRID
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1986Aug65.7°F66.5°F-0.8°NCLIMGRID
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1986Nov55.9°F54.3°F+1.6°NCLIMGRID
1986Dec49.4°F48.9°F+0.5°NCLIMGRID
1987Jan48.2°F48.8°F-0.6°NCLIMGRID
1987Feb53.1°F52.4°F+0.8°NCLIMGRID
1987Mar54.8°F53.9°F+0.9°NCLIMGRID
1987Apr61.0°F56.5°F+4.5°NCLIMGRID
1987May63.6°F60.6°F+2.9°NCLIMGRID
1987Jun64.9°F64.5°F+0.4°NCLIMGRID
1987Jul64.6°F66.6°F-2.0°NCLIMGRID
1987Aug67.0°F66.5°F+0.5°NCLIMGRID
1987Sep65.9°F65.7°F+0.2°NCLIMGRID
1987Oct64.3°F61.4°F+2.8°NCLIMGRID
1987Nov55.1°F54.3°F+0.8°NCLIMGRID
1987Dec49.7°F48.9°F+0.8°NCLIMGRID
1988Jan50.3°F48.8°F+1.5°NCLIMGRID
1988Feb54.4°F52.4°F+2.1°NCLIMGRID
1988Mar56.8°F53.9°F+2.9°NCLIMGRID
1988Apr58.9°F56.5°F+2.3°NCLIMGRID
1988May60.1°F60.6°F-0.6°NCLIMGRID
1988Jun64.7°F64.5°F+0.2°NCLIMGRID
1988Jul69.3°F66.6°F+2.7°NCLIMGRID
1988Aug67.5°F66.5°F+1.0°NCLIMGRID
1988Sep64.9°F65.7°F-0.7°NCLIMGRID
1988Oct62.5°F61.4°F+1.1°NCLIMGRID
1988Nov55.4°F54.3°F+1.1°NCLIMGRID
1988Dec49.0°F48.9°F+0.1°NCLIMGRID
1989Jan47.4°F48.8°F-1.4°NCLIMGRID
1989Feb48.5°F52.4°F-3.8°NCLIMGRID
1989Mar55.9°F53.9°F+2.0°NCLIMGRID
1989Apr61.6°F56.5°F+5.1°NCLIMGRID
1989May61.1°F60.6°F+0.5°NCLIMGRID
1989Jun65.6°F64.5°F+1.1°NCLIMGRID
1989Jul66.3°F66.6°F-0.3°NCLIMGRID
1989Aug66.4°F66.5°F-0.1°NCLIMGRID
1989Sep63.9°F65.7°F-1.8°NCLIMGRID
1989Oct61.1°F61.4°F-0.4°NCLIMGRID
1989Nov55.3°F54.3°F+1.0°NCLIMGRID
1989Dec48.9°F48.9°F+0.0°NCLIMGRID
1990Jan49.6°F48.8°F+0.7°NCLIMGRID
1990Feb49.0°F52.4°F-3.4°NCLIMGRID
1990Mar54.7°F53.9°F+0.8°NCLIMGRID
1990Apr60.5°F56.5°F+3.9°NCLIMGRID
1990May61.3°F60.6°F+0.7°NCLIMGRID
1990Jun65.4°F64.5°F+0.9°NCLIMGRID
1990Jul68.1°F66.6°F+1.5°NCLIMGRID
1990Aug68.7°F66.5°F+2.2°NCLIMGRID
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1990Oct63.5°F61.4°F+2.1°NCLIMGRID
1990Nov54.4°F54.3°F+0.1°NCLIMGRID
1990Dec44.0°F48.9°F-4.9°NCLIMGRID
1991Jan49.2°F48.8°F+0.4°NCLIMGRID
1991Feb55.7°F52.4°F+3.3°NCLIMGRID
1991Mar51.2°F53.9°F-2.7°NCLIMGRID
1991Apr56.0°F56.5°F-0.5°NCLIMGRID
1991May58.7°F60.6°F-1.9°NCLIMGRID
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1991Aug66.5°F66.5°F+0.0°NCLIMGRID
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1991Nov56.1°F54.3°F+1.8°NCLIMGRID
1991Dec49.2°F48.9°F+0.4°NCLIMGRID
1992Jan47.7°F48.8°F-1.1°NCLIMGRID
1992Feb55.7°F52.4°F+3.4°NCLIMGRID
1992Mar56.5°F53.9°F+2.6°NCLIMGRID
1992Apr61.3°F56.5°F+4.8°NCLIMGRID
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1992Nov55.6°F54.3°F+1.3°NCLIMGRID
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1993Jan48.1°F48.8°F-0.8°NCLIMGRID
1993Feb51.0°F52.4°F-1.3°NCLIMGRID
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1994Mar56.4°F53.9°F+2.5°NCLIMGRID
1994Apr57.4°F56.5°F+0.8°NCLIMGRID
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1995Jan53.2°F48.8°F+4.4°NCLIMGRID
1995Feb55.1°F52.4°F+2.8°NCLIMGRID
1995Mar53.9°F53.9°F+0.0°NCLIMGRID
1995Apr56.7°F56.5°F+0.2°NCLIMGRID
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1995Jun64.5°F64.5°F+0.0°NCLIMGRID
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1996Nov55.3°F54.3°F+1.0°NCLIMGRID
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1997Feb53.4°F52.4°F+1.0°NCLIMGRID
1997Mar57.1°F53.9°F+3.2°NCLIMGRID
1997Apr59.7°F56.5°F+3.1°NCLIMGRID
1997May66.1°F60.6°F+5.5°NCLIMGRID
1997Jun66.1°F64.5°F+1.6°NCLIMGRID
1997Jul68.5°F66.6°F+1.9°NCLIMGRID
1997Aug68.5°F66.5°F+1.9°NCLIMGRID
1997Sep69.2°F65.7°F+3.5°NCLIMGRID
1997Oct61.6°F61.4°F+0.2°NCLIMGRID
1997Nov56.4°F54.3°F+2.1°NCLIMGRID
1997Dec49.4°F48.9°F+0.5°NCLIMGRID
1998Jan52.4°F48.8°F+3.6°NCLIMGRID
1998Feb51.9°F52.4°F-0.5°NCLIMGRID
1998Mar55.1°F53.9°F+1.2°NCLIMGRID
1998Apr56.0°F56.5°F-0.5°NCLIMGRID
1998May57.5°F60.6°F-3.2°NCLIMGRID
1998Jun63.8°F64.5°F-0.7°NCLIMGRID
1998Jul67.7°F66.6°F+1.1°NCLIMGRID
1998Aug69.6°F66.5°F+3.1°NCLIMGRID
1998Sep67.0°F65.7°F+1.3°NCLIMGRID
1998Oct60.0°F61.4°F-1.5°NCLIMGRID
1998Nov53.6°F54.3°F-0.7°NCLIMGRID
1998Dec46.1°F48.9°F-2.8°NCLIMGRID
1999Jan48.9°F48.8°F+0.1°NCLIMGRID
1999Feb50.0°F52.4°F-2.4°NCLIMGRID
1999Mar51.0°F53.9°F-2.9°NCLIMGRID
1999Apr55.7°F56.5°F-0.9°NCLIMGRID
1999May57.8°F60.6°F-2.9°NCLIMGRID
1999Jun63.1°F64.5°F-1.4°NCLIMGRID
1999Jul65.7°F66.6°F-0.9°NCLIMGRID
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1999Sep66.2°F65.7°F+0.5°NCLIMGRID
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1999Nov56.2°F54.3°F+1.9°NCLIMGRID
1999Dec50.6°F48.9°F+1.7°NCLIMGRID
2000Jan51.6°F48.8°F+2.8°NCLIMGRID
2000Feb53.3°F52.4°F+1.0°NCLIMGRID
2000Mar55.2°F53.9°F+1.3°NCLIMGRID
2000Apr59.3°F56.5°F+2.7°NCLIMGRID
2000May62.5°F60.6°F+1.9°NCLIMGRID
2000Jun67.1°F64.5°F+2.6°NCLIMGRID
2000Jul65.2°F66.6°F-1.4°NCLIMGRID
2000Aug67.4°F66.5°F+0.8°NCLIMGRID
2000Sep67.4°F65.7°F+1.7°NCLIMGRID
2000Oct60.4°F61.4°F-1.0°NCLIMGRID
2000Nov51.4°F54.3°F-2.9°NCLIMGRID
2000Dec51.3°F48.9°F+2.4°NCLIMGRID
2001Jan48.3°F48.8°F-0.5°NCLIMGRID
2001Feb50.6°F52.4°F-1.7°NCLIMGRID
2001Mar56.9°F53.9°F+3.0°NCLIMGRID
2001Apr54.2°F56.5°F-2.3°NCLIMGRID
2001May66.0°F60.6°F+5.4°NCLIMGRID
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2001Nov56.3°F54.3°F+2.0°NCLIMGRID
2001Dec50.4°F48.9°F+1.5°NCLIMGRID
2002Jan47.6°F48.8°F-1.2°NCLIMGRID
2002Feb53.3°F52.4°F+0.9°NCLIMGRID
2002Mar53.4°F53.9°F-0.5°NCLIMGRID
2002Apr57.5°F56.5°F+1.0°NCLIMGRID
2002May59.7°F60.6°F-1.0°NCLIMGRID
2002Jun64.8°F64.5°F+0.3°NCLIMGRID
2002Jul67.4°F66.6°F+0.8°NCLIMGRID
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2002Sep67.2°F65.7°F+1.5°NCLIMGRID
2002Oct61.4°F61.4°F+0.0°NCLIMGRID
2002Nov56.8°F54.3°F+2.5°NCLIMGRID
2002Dec51.7°F48.9°F+2.8°NCLIMGRID
2003Jan54.4°F48.8°F+5.6°NCLIMGRID
2003Feb52.0°F52.4°F-0.3°NCLIMGRID
2003Mar55.8°F53.9°F+1.9°NCLIMGRID
2003Apr54.3°F56.5°F-2.3°NCLIMGRID
2003May61.3°F60.6°F+0.7°NCLIMGRID
2003Jun66.0°F64.5°F+1.5°NCLIMGRID
2003Jul68.9°F66.6°F+2.3°NCLIMGRID
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2003Sep68.2°F65.7°F+2.6°NCLIMGRID
2003Oct64.5°F61.4°F+3.1°NCLIMGRID
2003Nov52.9°F54.3°F-1.4°NCLIMGRID
2003Dec50.9°F48.9°F+2.1°NCLIMGRID
2004Jan49.8°F48.8°F+0.9°NCLIMGRID
2004Feb52.0°F52.4°F-0.4°NCLIMGRID
2004Mar60.7°F53.9°F+6.8°NCLIMGRID
2004Apr60.6°F56.5°F+4.1°NCLIMGRID
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2004Oct60.4°F61.4°F-1.1°NCLIMGRID
2004Nov53.6°F54.3°F-0.7°NCLIMGRID
2004Dec51.0°F48.9°F+2.1°NCLIMGRID
2005Jan49.0°F48.8°F+0.2°NCLIMGRID
2005Feb54.4°F52.4°F+2.1°NCLIMGRID
2005Mar57.2°F53.9°F+3.3°NCLIMGRID
2005Apr56.7°F56.5°F+0.2°NCLIMGRID
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2005Jul69.2°F66.6°F+2.6°NCLIMGRID
2005Aug67.8°F66.5°F+1.2°NCLIMGRID
2005Sep63.5°F65.7°F-2.2°NCLIMGRID
2005Oct61.7°F61.4°F+0.2°NCLIMGRID
2005Nov56.9°F54.3°F+2.6°NCLIMGRID
2005Dec52.9°F48.9°F+4.0°NCLIMGRID
2006Jan50.9°F48.8°F+2.0°NCLIMGRID
2006Feb53.3°F52.4°F+0.9°NCLIMGRID
2006Mar50.7°F53.9°F-3.2°NCLIMGRID
2006Apr56.1°F56.5°F-0.4°NCLIMGRID
2006May62.4°F60.6°F+1.8°NCLIMGRID
2006Jun67.2°F64.5°F+2.7°NCLIMGRID
2006Jul71.1°F66.6°F+4.5°NCLIMGRID
2006Aug66.2°F66.5°F-0.3°NCLIMGRID
2006Sep64.8°F65.7°F-0.9°NCLIMGRID
2006Oct60.9°F61.4°F-0.5°NCLIMGRID
2006Nov55.0°F54.3°F+0.7°NCLIMGRID
2006Dec49.8°F48.9°F+0.9°NCLIMGRID
2007Jan47.7°F48.8°F-1.1°NCLIMGRID
2007Feb52.4°F52.4°F+0.0°NCLIMGRID
2007Mar57.1°F53.9°F+3.2°NCLIMGRID
2007Apr57.4°F56.5°F+0.9°NCLIMGRID
2007May61.4°F60.6°F+0.8°NCLIMGRID
2007Jun64.8°F64.5°F+0.3°NCLIMGRID
2007Jul67.7°F66.6°F+1.1°NCLIMGRID
2007Aug67.8°F66.5°F+1.2°NCLIMGRID
2007Sep65.2°F65.7°F-0.4°NCLIMGRID
2007Oct60.2°F61.4°F-1.2°NCLIMGRID
2007Nov55.8°F54.3°F+1.5°NCLIMGRID
2007Dec48.2°F48.9°F-0.7°NCLIMGRID
2008Jan47.9°F48.8°F-1.0°NCLIMGRID
2008Feb51.7°F52.4°F-0.7°NCLIMGRID
2008Mar54.4°F53.9°F+0.5°NCLIMGRID
2008Apr56.4°F56.5°F-0.2°NCLIMGRID
2008May61.5°F60.6°F+0.8°NCLIMGRID
2008Jun65.9°F64.5°F+1.4°NCLIMGRID
2008Jul67.4°F66.6°F+0.8°NCLIMGRID
2008Aug68.2°F66.5°F+1.7°NCLIMGRID
2008Sep67.3°F65.7°F+1.6°NCLIMGRID
2008Oct63.4°F61.4°F+2.0°NCLIMGRID
2008Nov57.7°F54.3°F+3.3°NCLIMGRID
2008Dec47.8°F48.9°F-1.1°NCLIMGRID
2009Jan51.4°F48.8°F+2.6°NCLIMGRID
2009Feb52.0°F52.4°F-0.4°NCLIMGRID
2009Mar54.0°F53.9°F+0.1°NCLIMGRID
2009Apr57.2°F56.5°F+0.7°NCLIMGRID
2009May62.8°F60.6°F+2.1°NCLIMGRID
2009Jun65.3°F64.5°F+0.8°NCLIMGRID
2009Jul66.9°F66.6°F+0.3°NCLIMGRID
2009Aug68.3°F66.5°F+1.7°NCLIMGRID
2009Sep68.5°F65.7°F+2.9°NCLIMGRID
2009Oct61.4°F61.4°F+0.0°NCLIMGRID
2009Nov54.3°F54.3°F+0.0°NCLIMGRID
2009Dec48.8°F48.9°F+0.0°NCLIMGRID
2010Jan50.5°F48.8°F+1.7°NCLIMGRID
2010Feb53.4°F52.4°F+1.1°NCLIMGRID
2010Mar54.6°F53.9°F+0.7°NCLIMGRID
2010Apr54.9°F56.5°F-1.7°NCLIMGRID
2010May58.2°F60.6°F-2.4°NCLIMGRID
2010Jun65.1°F64.5°F+0.6°NCLIMGRID
2010Jul65.6°F66.6°F-1.0°NCLIMGRID
2010Aug65.1°F66.5°F-1.4°NCLIMGRID
2010Sep67.2°F65.7°F+1.6°NCLIMGRID
2010Oct62.5°F61.4°F+1.1°NCLIMGRID
2010Nov54.2°F54.3°F-0.1°NCLIMGRID
2010Dec52.4°F48.9°F+3.5°NCLIMGRID
2011Jan50.7°F48.8°F+1.8°NCLIMGRID
2011Feb50.3°F52.4°F-2.1°NCLIMGRID
2011Mar53.8°F53.9°F-0.1°NCLIMGRID
2011Apr56.4°F56.5°F-0.2°NCLIMGRID
2011May58.2°F60.6°F-2.4°NCLIMGRID
2011Jun63.4°F64.5°F-1.0°NCLIMGRID
2011Jul66.8°F66.6°F+0.2°NCLIMGRID
2011Aug66.3°F66.5°F-0.3°NCLIMGRID
2011Sep67.8°F65.7°F+2.1°NCLIMGRID
2011Oct63.9°F61.4°F+2.5°NCLIMGRID
2011Nov53.4°F54.3°F-0.9°NCLIMGRID
2011Dec49.1°F48.9°F+0.3°NCLIMGRID
2012Jan50.8°F48.8°F+2.0°NCLIMGRID
2012Feb52.9°F52.4°F+0.5°NCLIMGRID
2012Mar53.2°F53.9°F-0.7°NCLIMGRID
2012Apr58.2°F56.5°F+1.6°NCLIMGRID
2012May61.8°F60.6°F+1.1°NCLIMGRID
2012Jun65.3°F64.5°F+0.8°NCLIMGRID
2012Jul66.5°F66.6°F-0.1°NCLIMGRID
2012Aug67.0°F66.5°F+0.4°NCLIMGRID
2012Sep64.2°F65.7°F-1.5°NCLIMGRID
2012Oct63.5°F61.4°F+2.1°NCLIMGRID
2012Nov56.9°F54.3°F+2.6°NCLIMGRID
2012Dec49.8°F48.9°F+0.9°NCLIMGRID
2013Jan47.3°F48.8°F-1.6°NCLIMGRID
2013Feb50.4°F52.4°F-1.9°NCLIMGRID
2013Mar56.4°F53.9°F+2.5°NCLIMGRID
2013Apr61.1°F56.5°F+4.5°NCLIMGRID
2013May63.1°F60.6°F+2.4°NCLIMGRID
2013Jun67.0°F64.5°F+2.5°NCLIMGRID
2013Jul67.6°F66.6°F+1.0°NCLIMGRID
2013Aug67.2°F66.5°F+0.6°NCLIMGRID
2013Sep66.7°F65.7°F+1.0°NCLIMGRID
2013Oct60.4°F61.4°F-1.0°NCLIMGRID
2013Nov55.7°F54.3°F+1.4°NCLIMGRID
2013Dec48.1°F48.9°F-0.8°NCLIMGRID
2014Jan54.2°F48.8°F+5.4°NCLIMGRID
2014Feb54.4°F52.4°F+2.0°NCLIMGRID
2014Mar58.7°F53.9°F+4.8°NCLIMGRID
2014Apr59.7°F56.5°F+3.2°NCLIMGRID
2014May64.7°F60.6°F+4.0°NCLIMGRID
2014Jun66.3°F64.5°F+1.9°NCLIMGRID
2014Jul69.4°F66.6°F+2.8°NCLIMGRID
2014Aug68.6°F66.5°F+2.1°NCLIMGRID
2014Sep67.9°F65.7°F+2.2°NCLIMGRID
2014Oct65.6°F61.4°F+4.1°NCLIMGRID
2014Nov57.5°F54.3°F+3.2°NCLIMGRID
2014Dec55.0°F48.9°F+6.1°NCLIMGRID
2015Jan51.9°F48.8°F+3.1°NCLIMGRID
2015Feb57.5°F52.4°F+5.2°NCLIMGRID
2015Mar59.8°F53.9°F+5.9°NCLIMGRID
2015Apr58.8°F56.5°F+2.3°NCLIMGRID
2015May59.5°F60.6°F-1.2°NCLIMGRID
2015Jun67.0°F64.5°F+2.5°NCLIMGRID
2015Jul69.9°F66.6°F+3.3°NCLIMGRID
2015Aug70.1°F66.5°F+3.6°NCLIMGRID
2015Sep69.4°F65.7°F+3.8°NCLIMGRID
2015Oct66.6°F61.4°F+5.2°NCLIMGRID
2015Nov52.4°F54.3°F-1.9°NCLIMGRID
2015Dec48.7°F48.9°F-0.2°NCLIMGRID
2016Jan52.2°F48.8°F+3.3°NCLIMGRID
2016Feb57.1°F52.4°F+4.7°NCLIMGRID
2016Mar57.1°F53.9°F+3.2°NCLIMGRID
2016Apr60.6°F56.5°F+4.0°NCLIMGRID
2016May63.0°F60.6°F+2.3°NCLIMGRID
2016Jun67.8°F64.5°F+3.3°NCLIMGRID
2016Jul67.2°F66.6°F+0.6°NCLIMGRID
2016Aug66.8°F66.5°F+0.3°NCLIMGRID
2016Sep66.9°F65.7°F+1.2°NCLIMGRID
2016Oct62.0°F61.4°F+0.6°NCLIMGRID
2016Nov56.6°F54.3°F+2.3°NCLIMGRID
2016Dec49.3°F48.9°F+0.5°NCLIMGRID
2017Jan48.6°F48.8°F-0.2°NCLIMGRID
2017Feb53.6°F52.4°F+1.2°NCLIMGRID
2017Mar56.8°F53.9°F+2.9°NCLIMGRID
2017Apr58.4°F56.5°F+1.9°NCLIMGRID
2017May63.0°F60.6°F+2.3°NCLIMGRID
2017Jun66.6°F64.5°F+2.1°NCLIMGRID
2017Jul68.7°F66.6°F+2.1°NCLIMGRID
2017Aug68.7°F66.5°F+2.1°NCLIMGRID
2017Sep70.6°F65.7°F+4.9°NCLIMGRID
2017Oct63.8°F61.4°F+2.4°NCLIMGRID
2017Nov56.5°F54.3°F+2.2°NCLIMGRID
2017Dec50.6°F48.9°F+1.7°NCLIMGRID
2018Jan52.3°F48.8°F+3.5°NCLIMGRID
2018Feb53.4°F52.4°F+1.0°NCLIMGRID
2018Mar54.1°F53.9°F+0.2°NCLIMGRID
2018Apr58.0°F56.5°F+1.5°NCLIMGRID
2018May60.6°F60.6°F+0.0°NCLIMGRID
2018Jun65.6°F64.5°F+1.1°NCLIMGRID
2018Jul69.2°F66.6°F+2.6°NCLIMGRID
2018Aug66.8°F66.5°F+0.2°NCLIMGRID
2018Sep64.3°F65.7°F-1.3°NCLIMGRID
2018Oct62.9°F61.4°F+1.5°NCLIMGRID
2018Nov56.5°F54.3°F+2.2°NCLIMGRID
2018Dec51.3°F48.9°F+2.4°NCLIMGRID
2019Jan52.6°F48.8°F+3.8°NCLIMGRID
2019Feb48.8°F52.4°F-3.6°NCLIMGRID
2019Mar54.1°F53.9°F+0.2°NCLIMGRID
2019Apr60.7°F56.5°F+4.2°NCLIMGRID
2019May60.1°F60.6°F-0.6°NCLIMGRID
2019Jun68.4°F64.5°F+3.9°NCLIMGRID
2019Jul68.2°F66.6°F+1.6°NCLIMGRID
2019Aug70.4°F66.5°F+3.9°NCLIMGRID
2019Sep68.2°F65.7°F+2.5°NCLIMGRID
2019Oct62.9°F61.4°F+1.5°NCLIMGRID
2019Nov56.3°F54.3°F+2.0°NCLIMGRID
2019Dec51.6°F48.9°F+2.7°NCLIMGRID
2020Jan50.4°F48.8°F+1.5°NCLIMGRID
2020Feb55.7°F52.4°F+3.4°NCLIMGRID
2020Mar54.2°F53.9°F+0.3°NCLIMGRID
2020Apr59.2°F56.5°F+2.7°NCLIMGRID
2020May64.4°F60.6°F+3.8°NCLIMGRID
2020Jun67.9°F64.5°F+3.4°NCLIMGRID
2020Jul68.5°F66.6°F+1.9°NCLIMGRID
2020Aug72.0°F66.5°F+5.5°NCLIMGRID
2020Sep71.2°F65.7°F+5.5°NCLIMGRID
2020Oct68.6°F61.4°F+7.2°NCLIMGRID
2020Nov55.3°F54.3°F+1.0°NCLIMGRID
2020Dec51.9°F48.9°F+3.0°NCLIMGRID
2021Jan51.6°F48.8°F+2.8°NCLIMGRID
2021Feb53.3°F52.4°F+1.0°NCLIMGRID
2021Mar53.2°F53.9°F-0.7°NCLIMGRID
2021Apr58.1°F56.5°F+1.6°NCLIMGRID
2021May62.3°F60.6°F+1.7°NCLIMGRID
2021Jun67.6°F64.5°F+3.2°NCLIMGRID
2021Jul68.7°F66.6°F+2.1°NCLIMGRID
2021Aug69.4°F66.5°F+2.9°NCLIMGRID
2021Sep68.3°F65.7°F+2.6°NCLIMGRID
2021Oct61.6°F61.4°F+0.2°NCLIMGRID
2021Nov58.4°F54.3°F+4.1°NCLIMGRID
2021Dec49.1°F48.9°F+0.3°NCLIMGRID
2022Jan52.1°F48.8°F+3.3°NCLIMGRID
2022Feb53.6°F52.4°F+1.2°NCLIMGRID
2022Mar56.2°F53.9°F+2.3°NCLIMGRID
2022Apr58.2°F56.5°F+1.6°NCLIMGRID
2022May61.8°F60.6°F+1.2°NCLIMGRID
2022Jun67.8°F64.5°F+3.3°NCLIMGRID
2022Jul67.1°F66.6°F+0.5°NCLIMGRID
2022Aug69.7°F66.5°F+3.2°NCLIMGRID
2022Sep70.3°F65.7°F+4.6°NCLIMGRID
2022Oct63.2°F61.4°F+1.7°NCLIMGRID
2022Nov52.2°F54.3°F-2.1°NCLIMGRID
2022Dec49.3°F48.9°F+0.5°NCLIMGRID
2023Jan50.1°F48.8°F+1.3°NCLIMGRID
2023Feb49.3°F52.4°F-3.0°NCLIMGRID
2023Mar50.6°F53.9°F-3.3°NCLIMGRID
2023Apr57.7°F56.5°F+1.2°NCLIMGRID
2023May61.1°F60.6°F+0.4°NCLIMGRID
2023Jun64.2°F64.5°F-0.3°NCLIMGRID
2023Jul69.0°F66.6°F+2.4°NCLIMGRID
2023Aug70.7°F66.5°F+4.1°NCLIMGRID
2023Sep65.3°F65.7°F-0.4°NCLIMGRID
2023Oct64.7°F61.4°F+3.3°NCLIMGRID
2023Nov57.9°F54.3°F+3.6°NCLIMGRID
2023Dec53.5°F48.9°F+4.7°NCLIMGRID
2024Jan53.3°F48.8°F+4.5°NCLIMGRID
2024Feb54.0°F52.4°F+1.6°NCLIMGRID
2024Mar55.6°F53.9°F+1.7°NCLIMGRID
2024Apr59.3°F56.5°F+2.7°NCLIMGRID
2024May62.9°F60.6°F+2.3°NCLIMGRID
2024Jun67.9°F64.5°F+3.5°NCLIMGRID
2024Jul72.1°F66.6°F+5.5°NCLIMGRID
2024Aug69.2°F66.5°F+2.7°NCLIMGRID
2024Sep68.8°F65.7°F+3.1°NCLIMGRID
2024Oct68.3°F61.4°F+6.9°NCLIMGRID
2024Nov55.0°F54.3°F+0.7°NCLIMGRID
2024Dec55.1°F48.9°F+6.2°NCLIMGRID
2025Jan50.2°F48.8°F+1.4°NCLIMGRID
2025Feb52.9°F52.4°F+0.5°NCLIMGRID
2025Mar54.1°F53.9°F+0.2°NCLIMGRID
2025Apr58.2°F56.5°F+1.7°NCLIMGRID
2025May63.0°F60.6°F+2.4°NCLIMGRID
2025Jun65.6°F64.5°F+1.2°NCLIMGRID
2025Jul66.5°F66.6°F-0.1°NCLIMGRID
2025Aug69.7°F66.5°F+3.2°NCLIMGRID
2025Sep68.2°F65.7°F+2.5°NCLIMGRID
2025Oct61.4°F61.4°F-0.1°NCLIMGRID
2025Nov57.7°F54.3°F+3.4°NCLIMGRID
2025Dec53.5°F48.9°F+4.6°NCLIMGRID
2026Jan54.4°F48.8°F+5.6°NCLIMGRID
2026Feb55.8°F52.4°F+3.5°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
January48.8°F26/26
February52.4°F26/26
March53.9°F26/26
April56.5°F26/26
May60.6°F26/26
June64.5°F26/26
July66.6°F26/26
August66.5°F26/26
September65.7°F26/26
October61.4°F26/26
November54.3°F26/26
December48.9°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 Sunnyvale, California getting warmer?

Based on 96+ years of NOAA temperature records, Sunnyvale has warmed at a rate of approximately 0.34°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 Sunnyvale?

The warmest year on record in Sunnyvale was 2014, based on average annual temperature anomaly from NOAA station data.

Where does the temperature data for Sunnyvale 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 Sunnyvale's climate profile.

How are the climate visualizations for Sunnyvale created?

Three visualizations are generated from Sunnyvale'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 Sunnyvale's temperature data?

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

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