Climate Change in Nenana, Alaska

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

Based on our analysis of 96 years of temperature data near Nenana, AK, this area shows a warming trend of approximately +0.5°F per decade. 10 of the last 10 years recorded above-average temperatures, and 2019 was the warmest year on record at +7.1°F above the historical baseline.

Key Climate Facts

Rate of Change

+0.5°F

per decade

Warmest Year

2019

+7.1°F anomaly

Recent Warm Years

10 / 10

above-average years

Decade Shift

+2.5°F

2020s vs 1930s

Compared to the National Average

Nenana is warming 0.3°F/decade faster than the national average.

National: +0.20°F/decade
Nenana: +0.47°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 Nenana's long-term warming trend.

Temperature anomaly spiral for Nenana, Alaska
Climate spiral: monthly temperature anomalies from 96+ years of NOAA records for Nenana, AK.

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 Nenana, Alaska
Warming stripes: each stripe is one year of average temperature anomaly for Nenana, AK.

Temperature Trend

Annual temperature anomalies plotted over time with a linear regression trend line. The slope of +0.47°F per decade quantifies the rate of change.

Temperature trend chart for Nenana, Alaska
Linear trend: annual temperature anomalies with trend line for Nenana, AK.

Temperature by Decade

1930s
-0.29°F
1940s
-0.20°F
1950s
-2.30°F
1960s
-2.16°F
1970s
-0.39°F
1980s
+1.29°F
1990s
-0.13°F
2000s
+1.74°F
2010s
+3.38°F
2020s
+2.14°F

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

Anomaly Scale

-10.8°F Colder Normal +10.8°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 Nenana, AK. Filter by decade or download as CSV.

Data Sources & Audit

Station
NENANA MUNICIPAL AIRPORT, AK US
Distance
14.9 mi
Coverage
76.6%
Records
892
Range
1930-01 – 2026-01
Gap-filled
261 from 5 stations
Full Data Audit 1,153 records
YearMonthTempBaselineAnomalySourceGap
1930Jan-2.0°F-8.4°F+6.4°USW00026411
1930Feb-18.7°F-3.4°F-15.3°USW00026411
1930Mar8.3°F11.2°F-2.9°USW00026411
1930Apr26.6°F29.9°F-3.3°USW00026411
1930May49.2°F48.0°F+1.2°USW00026411
1930Jun57.7°F58.6°F-0.9°USW00026411
1930Jul60.0°F61.1°F-1.1°USW00026411
1930Aug54.5°F55.7°F-1.2°USW00026411
1930Sep42.6°F44.4°F-1.8°USW00026411
1930Oct25.9°F24.1°F+1.7°USW00026411
1930Nov-1.6°F3.7°F-5.3°USW00026411
1930Dec3.5°F-3.4°F+6.8°USW00026435
1931Jan1.3°F-8.4°F+9.8°USW00026411
1931Feb7.9°F-3.4°F+11.3°USW00026435
1931Mar8.6°F11.2°F-2.6°USW00026435
1931Apr24.7°F29.9°F-5.2°USW00026435
1931May41.6°F48.0°F-6.4°USW00026435
1931Jun57.5°F58.6°F-1.1°USW00026435
1931Jul60.2°F61.1°F-0.9°USW00026435
1931Aug55.3°F55.7°F-0.4°USW00026435
1931Sep45.4°F44.4°F+1.0°USW00026435
1931Oct26.9°F24.1°F+2.7°USW00026435
1931Nov12.7°F3.7°F+9.0°USW00026435
1931Dec-1.6°F-3.4°F+1.7°USW00026435
1932Jan-17.7°F-8.4°F-9.3°USW00026435
1932Feb-13.9°F-3.4°F-10.5°USW00026435
1932Mar15.1°F11.2°F+3.9°USW00026435
1932Apr29.5°F29.9°F-0.4°USW00026435
1932May46.9°F48.0°F-1.1°USW00026435
1932Jun56.1°F58.6°F-2.5°USW00026435
1932Jul60.7°F61.1°F-0.4°USW00026435
1932Aug53.1°F55.7°F-2.6°USW00026435
1932Sep42.5°F44.4°F-1.9°USW00026435
1932Oct30.1°F24.1°F+5.9°USW00026435
1932Nov-6.8°F3.7°F-10.5°USW00026411
1932Dec-10.4°F-3.4°F-7.0°USW00026411
1933Jan-18.3°F-8.4°F-9.9°USW00026435
1933Feb-4.3°F-3.4°F-0.9°USW00026435
1933Mar9.0°F11.2°F-2.2°USW00026435
1933Apr32.3°F29.9°F+2.4°USW00026411
1933May48.8°F48.0°F+0.8°USW00026435
1933Jun55.8°F58.6°F-2.7°USW00026435
1933Jul59.9°F61.1°F-1.2°USW00026435
1933Aug56.6°F55.7°F+0.8°USW00026435
1933Sep41.5°F44.4°F-2.9°USW00026435
1933Oct20.8°F24.1°F-3.4°USW00026435
1933Nov6.4°F3.7°F+2.7°USW00026435
1933Dec-25.6°F-3.4°F-22.3°USW00026435
1934Jan-27.2°F-8.4°F-18.8°USW00026435
1934Feb5.0°F-3.4°F+8.5°USW00026435
1934Mar8.5°F11.2°F-2.7°USW00026435
1934Apr34.1°F29.9°F+4.2°USW00026435
1934May47.8°F48.0°F-0.2°USW00026435
1934Jun61.5°F58.6°F+2.9°USW00026435
1934Jul57.3°F61.1°F-3.8°USW00026435
1934Aug56.6°F55.7°F+0.9°USW00026435
1934Sep49.2°F44.4°F+4.8°USW00026435
1934Oct34.0°F24.1°F+9.8°USW00026435
1934Nov4.9°F3.7°F+1.2°USW00026435
1934Dec7.3°F-3.4°F+10.7°USW00026435
1935Jan-5.3°F-8.4°F+3.2°USW00026435
1935Feb5.3°F-3.4°F+8.7°USW00026435
1935Mar6.2°F11.2°F-5.0°USW00026435
1935Apr25.2°F29.9°F-4.7°USW00026435
1935May43.9°F48.0°F-4.1°USW00026435
1935Jun57.2°F58.6°F-1.4°USW00026435
1935Jul61.8°F61.1°F+0.7°USW00026435
1935Aug50.9°F55.7°F-4.8°USW00026435
1935Sep42.7°F44.4°F-1.7°USW00026435
1935Oct27.4°F24.1°F+3.3°USW00026435
1935Nov4.0°F3.7°F+0.3°USW00026435
1935Dec-14.4°F-3.4°F-11.0°USW00026435
1936Jan0.7°F-8.4°F+9.1°USW00026435
1936Feb-5.2°F-3.4°F-1.8°USW00026435
1936Mar6.4°F11.2°F-4.8°USW00026435
1936Apr28.5°F29.9°F-1.3°USW00026411
1936May48.3°F48.0°F+0.4°USW00026411
1936Jun62.1°F58.6°F+3.6°USW00026411
1936Jul60.0°F61.1°F-1.1°USW00026435
1936Aug57.4°F55.7°F+1.7°USW00026435
1936Sep43.7°F44.4°F-0.7°USW00026435
1936Oct31.6°F24.1°F+7.4°USW00026435
1936Nov8.7°F3.7°F+5.0°USW00026435
1936Dec-8.6°F-3.4°F-5.3°USW00026435
1937Jan15.2°F-8.4°F+23.7°USW00026435
1937Feb-6.5°F-3.4°F-3.0°USW00026435
1937Mar3.8°F11.2°F-7.4°USW00026435
1937Apr19.8°F29.9°F-10.0°USW00026435
1937May43.4°F48.0°F-4.6°USW00026435
1937Jun62.8°F58.6°F+4.3°USW00026435
1937Jul60.6°F61.1°F-0.5°USW00026435
1937Aug51.8°F55.7°F-4.0°USW00026435
1937Sep50.5°F44.4°F+6.1°USW00026435
1937Oct31.2°F24.1°F+7.1°USW00026411
1937Nov12.0°F3.7°F+8.3°USW00026435
1937Dec-4.0°F-3.4°F-0.6°USW00026435
1938Jan-15.8°F-8.4°F-7.3°USW00026411
1938Feb-6.9°F-3.4°F-3.5°USW00026435
1938Mar7.7°F11.2°F-3.5°USW00026435
1938Apr31.3°F29.9°F+1.4°USW00026435
1938May45.7°F48.0°F-2.2°USW00026435
1938Jun58.0°F58.6°F-0.5°USW00026435
1938Jul60.6°F61.1°F-0.5°USW00026435
1938Aug56.0°F55.7°F+0.3°USW00026435
1938Sep49.0°F44.4°F+4.6°USW00026411
1938Oct37.4°F24.1°F+13.2°USW00026435
1938Nov10.6°F3.7°F+6.9°USW00026435
1938Dec0.7°F-3.4°F+4.1°USW00026435
1939Jan-9.6°F-8.4°F-1.2°USW00026435
1939Feb-0.2°F-3.4°F+3.2°USW00026435
1939Mar8.3°F11.2°F-2.9°USW00026435
1939Apr31.1°F29.9°F+1.3°USW00026435
1939May47.6°F48.0°F-0.4°USW00026435
1939Jun57.2°F58.6°F-1.4°USW00026435
1939Jul62.1°F61.1°F+1.0°USW00026435
1939Aug55.1°F55.7°F-0.6°USW00026435
1939Sep43.3°F44.4°F-1.1°USW00026435
1939Oct21.2°F24.1°F-3.0°USW00026435
1939Nov-3.5°F3.7°F-7.3°USW00026435
1939Dec0.9°F-3.4°F+4.3°USW00026435
1940Jan1.9°F-8.4°F+10.4°USW00026435
1940Feb-1.5°F-3.4°F+2.0°USW00026435
1940Mar10.7°F11.2°F-0.6°USW00026435
1940Apr42.2°F29.9°F+12.4°USW00026435
1940May51.1°F48.0°F+3.1°USW00026435
1940Jun62.7°F58.6°F+4.1°USW00026435
1940Jul63.4°F61.1°F+2.3°USW00026435
1940Aug58.7°F55.7°F+3.0°USW00026435
1940Sep46.7°F44.4°F+2.3°USW00026435
1940Oct29.3°F24.1°F+5.2°USW00026435
1940Nov11.0°F3.7°F+7.3°USW00026435
1940Dec-3.9°F-3.4°F-0.5°USW00026435
1941Jan-13.2°F-8.4°F-4.7°USW00026435
1941Feb9.2°F-3.4°F+12.7°USW00026435
1941Mar10.2°F11.2°F-1.1°USW00026435
1941Apr30.2°F29.9°F+0.3°USW00026435
1941May47.6°F48.0°F-0.4°USW00026435
1941Jun60.4°F58.6°F+1.8°USW00026411
1941Jul60.2°F61.1°F-0.9°USW00026435
1941Aug61.6°F55.7°F+5.8°USW00026435
1941Sep45.7°F44.4°F+1.3°USW00026435
1941Oct22.5°F24.1°F-1.6°USW00026435
1941Nov2.3°F3.7°F-1.4°USW00026435
1941Dec-6.5°F-3.4°F-3.2°USW00026411
1942Jan3.6°F-8.4°F+12.0°USW00026411
1942Feb12.4°F-3.4°F+15.8°USW00026435
1942Mar6.1°F11.2°F-5.1°USW00026435
1942Apr32.9°F29.9°F+3.0°USW00026435
1942May52.6°F48.0°F+4.6°USW00026435
1942Jun59.7°F58.6°F+1.2°USW00026435
1942Jul59.9°F61.1°F-1.2°USW00026435
1942Aug57.1°F55.7°F+1.4°USW00026435
1942Sep48.5°F44.4°F+4.1°USW00026435
1942Oct27.7°F24.1°F+3.5°USW00026435
1942Nov-4.7°F3.7°F-8.4°USW00026411
1942Dec-22.2°F-3.4°F-18.8°USW00026411
1943Jan-19.6°F-8.4°F-11.2°USW00026411
1943Feb12.1°F-3.4°F+15.5°USW00026435
1943Mar13.1°F11.2°F+1.9°USW00026435
1943Apr29.7°F29.9°F-0.2°USW00026435
1943May46.4°F48.0°F-1.6°USW00026435
1943Jun60.3°F58.6°F+1.8°USW00026411
1943Jul60.2°F61.1°F-0.9°USW00026411
1943Aug53.6°F55.7°F-2.1°USW00026411
1943Sep44.6°F44.4°F+0.2°USW00026411
1943Oct30.7°F24.1°F+6.6°USW00026411
1943Nov13.9°F3.7°F+10.2°USW00026411
1943Dec1.4°F-3.4°F+4.7°USW00026411
1944Jan-5.7°F-8.4°F+2.7°USW00026435
1944Feb10.8°F-3.4°F+14.2°USW00026411
1944Mar9.8°F11.2°F-1.5°USW00026411
1944Apr26.5°F29.9°F-3.3°USW00026411
1944May49.4°F48.0°F+1.4°USW00026435
1944Jun61.7°F58.6°F+3.1°USW00026435
1944Jul63.0°F61.1°F+1.9°USW00026435
1944Aug55.1°F55.7°F-0.6°USW00026435
1944Sep44.2°F44.4°F-0.2°USW00026435
1944Oct30.7°F24.1°F+6.5°USW00026435
1944Nov5.3°F3.7°F+1.6°USW00026435
1944Dec-0.5°F-3.4°F+2.9°USW00026411
1945Jan6.7°F-8.4°F+15.2°USW00026435
1945Feb10.1°F-3.4°F+13.6°USW00026435
1945Mar8.4°F11.2°F-2.9°USW00026435
1945Apr23.6°F29.9°F-6.2°USW00026435
1945May42.7°F48.0°F-5.3°USW00026435
1945Jun54.5°F58.6°F-4.1°USW00026435
1945Jul59.0°F61.1°F-2.1°USW00026435
1945Aug54.4°F55.7°F-1.3°USW00026435
1945Sep42.8°F44.4°F-1.6°USW00026435
1945Oct25.1°F24.1°F+0.9°USW00026435
1945Nov-4.4°F3.7°F-8.1°USW00026435
1945Dec-4.7°F-3.4°F-1.4°USW00026435
1946Jan-1.9°F-8.4°F+6.6°USW00026435
1946Feb-0.9°F-3.4°F+2.5°USW00026435
1946Mar-1.7°F11.2°F-12.9°USW00026435
1946Apr23.8°F29.9°F-6.1°USW00026435
1946May46.4°F48.0°F-1.6°USW00026435
1946Jun60.4°F58.6°F+1.9°USW00026435
1946Jul61.7°F61.1°F+0.6°USW00026435
1946Aug53.1°F55.7°F-2.7°USW00026435
1946Sep40.6°F44.4°F-3.8°USW00026435
1946Oct29.7°F24.1°F+5.5°USW00026435
1946Nov-3.9°F3.7°F-7.6°USW00026435
1946Dec-23.5°F-3.4°F-20.1°USW00026435
1947Jan-25.3°F-8.4°F-16.8°USW00026435
1947Feb-0.1°F-3.4°F+3.3°USW00026435
1947Mar12.0°F11.2°F+0.7°USW00026435
1947Apr28.6°F29.9°F-1.3°USW00026435
1947May47.5°F48.0°F-0.5°USW00026435
1947Jun54.0°F58.6°F-4.5°USW00026435
1947Jul60.2°F61.1°F-1.0°USW00026435
1947Aug49.3°F55.7°F-6.5°USW00026435
1947Sep39.4°F44.4°F-5.0°USW00026435
1947Oct21.0°F24.1°F-3.2°USW00026435
1947Nov8.7°F3.7°F+5.0°USW00026435
1947Dec3.0°F-3.4°F+6.4°USW00026435
1948Jan-5.5°F-8.4°F+2.9°USW00026435
1948Feb-9.7°F-3.4°F-6.3°USW00026435
1948Mar0.5°F11.2°F-10.8°USW00026435
1948Apr19.7°F29.9°F-10.1°USW00026435
1948May42.5°F48.0°F-5.5°USW00026435
1948Jun57.4°F58.6°F-1.1°USW00026435
1948Jul56.3°F61.1°F-4.8°USW00026435
1948Aug49.4°F55.7°F-6.4°USW00026435
1948Sep38.7°F44.4°F-5.7°USW00026435
1948Oct21.8°F24.1°F-2.4°USW00026435
1948Nov-5.9°F3.7°F-9.6°USW00026435
1948Dec-16.9°F-3.4°F-13.5°USW00026435
1949Jan-6.4°F-8.4°F+2.1°USW00026435
1949Feb-7.9°F-3.4°F-4.5°USW00026435
1949Mar18.8°F11.2°F+7.5°USW00026435
1949Apr18.4°F29.9°F-11.5°USW00026435
1949May42.1°F48.0°F-5.9°USW00026435
1949Jun50.7°F58.6°F-7.8°USW00026435
1949Jul59.1°F61.1°F-2.0°USW00026435
1949Aug54.7°F55.7°F-1.0°USW00026435
1949Sep48.4°F44.4°F+4.0°USW00026411
1949Oct28.2°F24.1°F+4.1°USW00026411
1949Nov13.0°F3.7°F+9.3°USW00026411
1949Dec-9.6°F-3.4°F-6.2°USW00026411
1950Jan-0.2°F-8.4°F+8.3°USW00026411
1950Feb-20.0°F-3.4°F-16.6°USW00026411
1950Mar17.6°F11.2°F+6.4°USW00026435
1950Apr26.8°F29.9°F-3.0°USW00026435
1950May46.4°F48.0°F-1.6°USW00026435
1950Jun56.1°F58.6°F-2.5°USW00026435
1950Jul59.9°F61.1°F-1.2°USW00026435
1950Aug56.5°F55.7°F+0.8°USW00026435
1950Sep44.8°F44.4°F+0.4°USW00026435
1950Oct24.4°F24.1°F+0.3°USW00026435
1950Nov-3.4°F3.7°F-7.1°USW00026435
1950Dec-5.8°F-3.4°F-2.4°USW00026435
1951Jan-19.7°F-8.4°F-11.3°USW00026435
1951Feb-5.6°F-3.4°F-2.2°USW00026435
1951Mar-3.1°F11.2°F-14.3°USW00026435
1951Apr30.8°F29.9°F+0.9°USW00026435
1951May47.1°F48.0°F-0.9°USW00026435
1951Jun54.9°F58.6°F-3.7°USW00026435
1951Jul58.7°F61.1°F-2.4°USW00026435
1951Aug55.7°F55.7°F+0.0°USW00026435
1951Sep43.9°F44.4°F-0.5°USW00026435
1951Oct22.3°F24.1°F-1.9°USW00026435
1951Nov14.5°F3.7°F+10.8°USW00026435
1951Dec-6.0°F-3.4°F-2.6°USW00026435
1952Jan-14.4°F-8.4°F-5.9°USW00026435
1952Feb-3.9°F-3.4°F-0.5°USW00026435
1952Mar5.7°F11.2°F-5.6°USW00026435
1952Apr25.2°F29.9°F-4.7°USW00026435
1952May39.8°F48.0°F-8.2°USW00026435
1952Jun56.1°F58.6°F-2.4°USW00026435
1952Jul57.7°F61.1°F-3.4°USW00026435
1952Aug51.9°F55.7°F-3.9°USW00026435
1952Sep39.4°F44.4°F-5.0°USW00026435
1952Oct28.9°F24.1°F+4.7°USW00026435
1952Nov17.1°F3.7°F+13.4°USW00026435
1952Dec0.2°F-3.4°F+3.5°USW00026435
1953Jan-15.3°F-8.4°F-6.8°USW00026435
1953Feb2.0°F-3.4°F+5.4°USW00026435
1953Mar6.5°F11.2°F-4.8°USW00026435
1953Apr35.9°F29.9°F+6.0°USW00026435
1953May48.6°F48.0°F+0.6°USW00026435
1953Jun59.7°F58.6°F+1.2°USW00026435
1953Jul60.2°F61.1°F-0.9°USW00026435
1953Aug54.8°F55.7°F-1.0°USW00026435
1953Sep44.4°F44.4°F+0.0°USW00026435
1953Oct23.1°F24.1°F-1.0°USW00026435
1953Nov3.0°F3.7°F-0.7°USW00026435
1953Dec-5.4°F-3.4°F-2.0°USW00026435
1954Jan-12.7°F-8.4°F-4.2°USW00026435
1954Feb-16.7°F-3.4°F-13.3°USW00026435
1954Mar11.5°F11.2°F+0.3°USW00026435
1954Apr23.0°F29.9°F-6.8°USW00026435
1954May48.7°F48.0°F+0.7°USW00026435
1954Jun56.9°F58.6°F-1.7°USW00026435
1954Jul57.0°F61.1°F-4.1°USW00026435
1954Aug55.4°F55.7°F-0.4°USW00026435
1954Sep41.6°F44.4°F-2.7°USW00026435
1954Oct29.2°F24.1°F+5.0°USW00026435
1954Nov12.8°F3.7°F+9.1°USW00026435
1954Dec-20.9°F-3.4°F-17.5°USW00026435
1955Jan0.2°F-8.4°F+8.7°USW00026435
1955Feb-12.1°F-3.4°F-8.7°USW00026435
1955Mar8.1°F11.2°F-3.1°USW00026435
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2010Sep45.9°F44.4°F+1.5°USW00026435
2010Oct27.8°F24.1°F+3.7°USW00026435
2010Nov13.4°F3.7°F+9.7°USW00026435
2010Dec-17.6°F-3.4°F-14.2°USW00026435
2011Jan-0.8°F-8.4°F+7.7°USW00026435
2011Feb-1.3°F-3.4°F+2.2°USW00026435
2011Mar11.7°F11.2°F+0.4°USW00026435
2011Apr28.5°F29.9°F-1.3°USW00026435
2011May50.2°F48.0°F+2.2°USW00026435
2011Jun59.0°F58.6°F+0.5°USW00026435
2011Jul59.6°F61.1°F-1.5°USW00026435
2011Aug54.6°F55.7°F-1.1°USW00026435
2011Sep47.2°F44.4°F+2.8°USW00026435
2011Oct27.1°F24.1°F+2.9°USW00026435
2011Nov-5.3°F3.7°F-9.0°USW00026435
2011Dec5.4°F-3.4°F+8.8°USW00026435
2012Jan-21.4°F-8.4°F-13.0°USW00026435
2012Feb11.9°F-3.4°F+15.3°USW00026435
2012Mar0.9°F11.2°F-10.3°USW00026435
2012Apr34.7°F29.9°F+4.8°USW00026435
2012May46.6°F48.0°F-1.4°USW00026435
2012Jun60.2°F58.6°F+1.6°USW00026435
2012Jul58.4°F61.1°F-2.7°USR0000ATTA
2012Aug55.5°F55.7°F-0.2°USW00026435
2012Sep45.7°F44.4°F+1.3°USW00026435
2012Oct22.7°F24.1°F-1.4°USW00026435
2012Nov-6.4°F3.7°F-10.1°USW00026435
2012Dec-10.9°F-3.4°F-7.5°USW00026435
2013Jan3.6°F-8.4°F+12.0°USW00026435
2013Feb-1.8°F-3.4°F+1.6°USW00026435
2013Mar5.9°F11.2°F-5.4°USW00026435
2013Apr17.8°F29.9°F-12.1°USW00026435
2013May42.3°F48.0°F-5.6°USW00026435
2013Jun64.6°F58.6°F+6.0°USW00026435
2013Jul61.8°F61.1°F+0.7°USW00026435
2013Aug57.5°F55.7°F+1.8°USW00026435
2013Sep42.1°F44.4°F-2.3°USW00026435
2013Oct36.7°F24.1°F+12.6°USW00026435
2013Nov8.0°F3.7°F+4.3°USW00026435
2013Dec-1.4°F-3.4°F+1.9°USW00026435
2014Jan10.1°F-8.4°F+18.6°USW00026435
2014Feb-0.7°F-3.4°F+2.8°USW00026435
2014Mar14.5°F11.2°F+3.2°USW00026435
2014Apr31.9°F29.9°F+2.1°USW00026435
2014May49.0°F48.0°F+1.1°USW00026435
2014Jun56.0°F58.6°F-2.6°USW00026435
2014Jul59.0°F61.1°F-2.1°USW00026435
2014Aug57.8°F55.7°F+2.1°USW00026435
2014Sep45.4°F44.4°F+1.0°USW00026435
2014Oct23.8°F24.1°F-0.3°USW00026435
2014Nov14.4°F3.7°F+10.7°USW00026435
2014Dec8.5°F-3.4°F+11.9°USW00026435
2015Jan-2.3°F-8.4°F+6.1°USW00026435
2015Feb6.8°F-3.4°F+10.3°USW00026435
2015Mar17.6°F11.2°F+6.4°USW00026435
2015Apr36.9°F29.9°F+7.1°USW00026435
2015May55.0°F48.0°F+7.0°USW00026435
2015Jun59.5°F58.6°F+0.9°USW00026435
2015Jul61.8°F61.1°F+0.7°USW00026435
2015Aug54.5°F55.7°F-1.2°USW00026435
2015Sep42.4°F44.4°F-2.0°USW00026435
2015Oct31.4°F24.1°F+7.3°USW00026435
2015Nov12.5°F3.7°F+8.8°USW00026435
2015Dec1.6°F-3.4°F+5.0°USW00026435
2016Jan11.6°F-8.4°F+20.0°USW00026435
2016Feb13.6°F-3.4°F+17.0°USW00026435
2016Mar17.7°F11.2°F+6.5°USW00026435
2016Apr38.4°F29.9°F+8.5°USW00026435
2016May52.3°F48.0°F+4.3°USW00026435
2016Jun59.1°F58.6°F+0.6°USW00026435
2016Jul62.7°F61.1°F+1.6°USW00026435
2016Aug62.2°F55.7°F+6.5°USW00026435
2016Sep45.6°F44.4°F+1.2°USW00026435
2016Oct28.5°F24.1°F+4.4°USW00026435
2016Nov7.1°F3.7°F+3.4°USW00026435
2016Dec-0.9°F-3.4°F+2.5°USW00026435
2017Jan-6.5°F-8.4°F+1.9°USW00026435
2017Feb1.9°F-3.4°F+5.3°USW00026435
2017Mar-2.6°F11.2°F-13.9°USW00026435
2017Apr34.6°F29.9°F+4.8°USW00026435
2017May49.5°F48.0°F+1.5°USW00026435
2017Jun60.4°F58.6°F+1.8°USW00026435
2017Jul65.3°F61.1°F+4.2°USW00026435
2017Aug57.7°F55.7°F+1.9°USW00026435
2017Sep47.5°F44.4°F+3.1°USW00026435
2017Oct32.2°F24.1°F+8.1°USW00026435
2017Nov11.5°F3.7°F+7.8°USW00026435
2017Dec17.4°F-3.4°F+20.8°USW00026435
2018Jan-1.0°F-8.4°F+7.4°USW00026435
2018Feb10.5°F-3.4°F+13.9°USW00026435
2018Mar18.0°F11.2°F+6.7°USW00026435
2018Apr30.2°F29.9°F+0.4°USW00026435
2018May48.8°F48.0°F+0.8°USW00026435
2018Jun58.5°F58.6°F+0.0°USW00026435
2018Jul64.6°F61.1°F+3.5°USW00026435
2018Aug55.9°F55.7°F+0.2°USW00026435
2018Sep47.9°F44.4°F+3.5°USW00026435
2018Oct35.3°F24.1°F+11.2°USW00026435
2018Nov14.8°F3.7°F+11.1°USW00026435
2018Dec1.0°F-3.4°F+4.3°USW00026435
2019Jan-2.7°F-8.4°F+5.8°USW00026435
2019Feb11.3°F-3.4°F+14.7°USW00026435
2019Mar29.7°F11.2°F+18.5°USW00026435
2019Apr36.3°F29.9°F+6.5°USW00026435
2019May52.7°F48.0°F+4.7°USW00026435
2019Jun62.9°F58.6°F+4.4°USW00026435
2019Jul66.0°F61.1°F+4.9°USW00026435
2019Aug56.2°F55.7°F+0.5°USW00026435
2019Sep48.5°F44.4°F+4.1°USW00026435
2019Oct32.6°F24.1°F+8.4°USW00026435
2019Nov16.1°F3.7°F+12.4°USW00026435
2019Dec-2.8°F-3.4°F+0.5°USW00026435
2020Jan-15.9°F-8.4°F-7.4°USW00026435
2020Feb-3.6°F-3.4°F-0.2°USW00026435
2020Mar11.8°F11.2°F+0.6°USW00026435
2020Apr34.7°F29.9°F+4.9°USW00026435
2020May53.1°F48.0°F+5.2°USW00026435
2020Jun59.8°F58.6°F+1.3°USW00026435
2020Jul61.4°F61.1°F+0.3°USW00026435
2020Aug59.9°F55.7°F+4.2°USW00026435
2020Sep48.0°F44.4°F+3.6°USW00026435
2020Oct29.9°F24.1°F+5.7°USW00026435
2020Nov8.6°F3.7°F+4.9°USW00026435
2020Dec4.7°F-3.4°F+8.1°USW00026435
2021Jan2.8°F-8.4°F+11.2°USW00026435
2021Feb-6.9°F-3.4°F-3.5°USR0000ATTA
2021Mar6.5°F11.2°F-4.8°USW00026435
2021Apr26.6°F29.9°F-3.3°USW00026435
2021May49.7°F48.0°F+1.7°USW00026435
2021Jun61.4°F58.6°F+2.9°USW00026435
2021Jul62.9°F61.1°F+1.8°USW00026435
2021Aug55.2°F55.7°F-0.5°USW00026435
2021Sep43.0°F44.4°F-1.4°USW00026435
2021Oct30.2°F24.1°F+6.1°USW00026435
2021Nov1.6°F3.7°F-2.1°USW00026435
2021Dec4.5°F-3.4°F+7.8°USW00026435
2022Jan-6.2°F-8.4°F+2.2°USW00026435
2022Feb1.3°F-3.4°F+4.7°USW00026435
2022Mar13.9°F11.2°F+2.7°USW00026435
2022Apr27.4°F29.9°F-2.4°USW00026435
2022May48.9°F48.0°F+1.0°USW00026435
2022Jun59.5°F58.6°F+1.0°USW00026435
2022Jul60.4°F61.1°F-0.7°USW00026435
2022Aug56.0°F55.7°F+0.3°USW00026435
2022Sep46.5°F44.4°F+2.1°USW00026435
2022Oct27.2°F24.1°F+3.0°USW00026435
2022Nov10.9°F3.7°F+7.2°USW00026435
2022Dec-0.6°F-3.4°F+2.8°USW00026435
2023Jan-2.2°F-8.4°F+6.3°USW00026435
2023Feb-1.4°F-3.4°F+2.0°USW00026435
2023Mar14.0°F11.2°F+2.7°USR0000ATTA
2023Apr20.5°F29.9°F-9.4°USR0000ATTA
2023May48.6°F48.0°F+0.6°USR0000ATTA
2023Jun57.8°F58.6°F-0.7°USW00026435
2023Jul63.8°F61.1°F+2.7°USW00026435
2023Aug59.4°F55.7°F+3.7°USW00026435
2023Sep43.2°F44.4°F-1.2°USW00026435
2023Oct25.6°F24.1°F+1.5°USW00026435
2023Nov17.0°F3.7°F+13.3°USW00026435
2023Dec-4.0°F-3.4°F-0.6°USW00026435
2024Jan-8.2°F-8.4°F+0.3°USR0000ATTA
2024Feb6.6°F-3.4°F+10.0°USW00026435
2024Mar13.0°F11.2°F+1.8°USW00026435
2024Apr34.6°F29.9°F+4.7°USW00026435
2024May48.0°F48.0°F+0.0°USW00026435
2024Jun62.1°F58.6°F+3.6°USW00026435
2024Jul59.7°F61.1°F-1.4°USW00026435
2024Aug55.4°F55.7°F-0.3°USW00026435
2024Sep45.5°F44.4°F+1.1°USW00026435
2024Oct25.9°F24.1°F+1.7°USW00026435
2024Nov4.7°F3.7°F+1.0°USW00026435
2024Dec5.3°F-3.4°F+8.6°USW00026435
2025Jan11.1°F-8.4°F+19.5°USW00026435
2025Feb2.8°F-3.4°F+6.2°USW00026435
2025Mar15.2°F11.2°F+4.0°USW00026435
2025Apr34.0°F29.9°F+4.1°USW00026435
2025May47.0°F48.0°F-1.0°USW00026435
2025Jun59.4°F58.6°F+0.8°USW00026435
2025Jul62.8°F61.1°F+1.7°USW00026435
2025Aug57.3°F55.7°F+1.5°USW00026435
2025Sep44.9°F44.4°F+0.5°USW00026435
2025Oct31.7°F24.1°F+7.6°USR0000ATTA
2025Nov10.0°F3.7°F+6.3°USW00026435
2025Dec-15.6°F-3.4°F-12.2°USR0000ATTA
2026Jan-14.3°F-8.4°F-5.9°USW00026435

Showing 1,153 of 1,153 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 query NOAA's Global Summary of the Month (GSOM) database for the closest weather station with good 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).

272

Initial gaps

261

Filled

11

Unfillable

Fill stations: CLEAR 4 N, AK US, KEYSTONE RIDGE, AK US, GOLD KING ALASKA, AK US, FAIRBANKS INTERNATIONAL AIRPORT, AK US, CHATANIKA ALASKA, AK US

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
January-8.4°F26/26
February-3.4°F26/26
March11.2°F26/26
April29.9°F26/26
May48.0°F26/26
June58.6°F26/26
July61.1°F26/26
August55.7°F26/26
September44.4°F26/26
October24.1°F26/26
November3.7°F26/26
December-3.4°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

Time of Observation Bias (TOBS)

Early cooperative weather stations typically read their min/max thermometers in the afternoon. This meant a single hot afternoon's peak temperature could be counted in two consecutive daily readings, inflating monthly maximums.

Between the 1950s and 1980s, most stations switched to morning or midnight observation times. This eliminated the warm bias but introduced a slight cool bias during the transition.

As a result, early decades in our data may read slightly warmer than they actually were, and the transition period may show an artificial cooling dip. Neither reflects actual temperature change. We use raw GSOM data without TOBS adjustments (NOAA's adjusted products like nClimDiv correct for this, but our station-level data does not).

Frequently Asked Questions

Is Nenana, Alaska getting warmer?

Based on 96+ years of NOAA temperature records, Nenana has warmed at a rate of approximately 0.47°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 Nenana?

The warmest year on record in Nenana was 2019, based on average annual temperature anomaly from NOAA station data.

Where does the temperature data for Nenana come from?

Data comes from the NENANA MUNICIPAL AIRPORT, AK US weather station, part of NOAA's Global Historical Climatology Network. This station has recorded 96+ years of temperature observations used to build Nenana's climate profile.

How are the climate visualizations for Nenana created?

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

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

Wear Nenana's Climate Story

These visualizations are printed on demand using Nenana's actual NOAA data. Every purchase plants a tree.

Shop Nenana Climate Apparel →

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