Climate Change in Cooper Landing, Alaska

94+ years of recorded temperature data show Cooper Landing is changing.

Based on our analysis of 94 years of temperature data near Cooper Landing, AK, this area shows relatively stable temperatures of approximately +0.2°F per decade. 8 of the last 10 years recorded above-average temperatures, and 2016 was the warmest year on record at +4.6°F above the historical baseline.

Key Climate Facts

Rate of Change

+0.2°F

per decade

Warmest Year

2016

+4.6°F anomaly

Recent Warm Years

8 / 10

above-average years

Decade Shift

+1.0°F

2020s vs 1930s

Compared to the National Average

Cooper Landing is warming at roughly the national average rate.

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

Temperature anomaly spiral for Cooper Landing, Alaska
Climate spiral: monthly temperature anomalies from 94+ years of NOAA records for Cooper Landing, 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 Cooper Landing, Alaska
Warming stripes: each stripe is one year of average temperature anomaly for Cooper Landing, AK.

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 Cooper Landing, Alaska
Linear trend: annual temperature anomalies with trend line for Cooper Landing, AK.

Temperature by Decade

1930s
-0.68°F
1940s
+0.45°F
1950s
-0.35°F
1960s
+0.18°F
1970s
-0.98°F
1980s
+0.98°F
1990s
+0.34°F
2000s
+0.83°F
2010s
+1.42°F
2020s
+0.37°F

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

Anomaly Scale

-5.8°F Colder Normal +5.8°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 Cooper Landing, AK. Filter by decade or download as CSV.

Data Sources & Audit

Station
SEWARD AIRPORT, AK US
Distance
30.6 mi
Coverage
95.4%
Records
1,111
Range
1930-01 – 2026-01
Gap-filled
19 from 4 stations
Full Data Audit 1,130 records
YearMonthTempBaselineAnomalySourceGap
1930Jan28.4°F24.1°F+4.2°USW00026438
1930Feb18.9°F27.0°F-8.1°USW00026438
1930Mar29.0°F31.8°F-2.8°USW00026438
1930Apr37.3°F37.7°F-0.4°USW00026438
1930May43.9°F45.1°F-1.2°USW00026438
1930Jul54.6°F56.0°F-1.4°USW00026438
1930Aug55.2°F55.2°F-0.1°USW00026438
1930Sep48.5°F49.3°F-0.8°USW00026438
1930Oct39.2°F39.3°F-0.1°USW00026438
1930Nov30.0°F31.1°F-1.1°USW00026438
1930Dec32.2°F27.2°F+5.0°USW00026438
1931Jan32.1°F24.1°F+7.9°USW00026438
1931Feb30.3°F27.0°F+3.3°USW00026438
1931Mar30.0°F31.8°F-1.8°USW00026438
1931Apr41.4°F37.7°F+3.8°USW00026438
1931May43.8°F45.1°F-1.3°USW00026438
1931Jun50.0°F51.5°F-1.4°USW00026438
1931Jul53.7°F56.0°F-2.3°USW00026438
1931Aug55.6°F55.2°F+0.3°USW00026438
1931Sep49.4°F49.3°F+0.2°USW00026438
1931Oct39.7°F39.3°F+0.4°USW00026438
1931Nov32.5°F31.1°F+1.4°USW00026438
1931Dec23.0°F27.2°F-4.3°USW00026438
1932Feb18.7°F27.0°F-8.4°USW00026438
1932Mar35.0°F31.8°F+3.2°USW00026438
1932Apr38.2°F37.7°F+0.6°USW00026438
1932May43.0°F45.1°F-2.2°USW00026438
1932Jun48.6°F51.5°F-2.9°USW00026438
1932Jul54.8°F56.0°F-1.2°USW00026438
1932Aug53.0°F55.2°F-2.3°USW00026438
1932Sep46.4°F49.3°F-2.9°USW00026438
1932Oct41.1°F39.3°F+1.7°USW00026438
1932Nov25.3°F31.1°F-5.8°USW00026438
1932Dec29.0°F27.2°F+1.8°USW00026438
1933Jan17.3°F24.1°F-6.8°USW00026438
1933Feb25.8°F27.0°F-1.3°USW00026438
1933Mar28.6°F31.8°F-3.2°USW00026438
1933Apr36.0°F37.7°F-1.7°USW00026438
1933May44.3°F45.1°F-0.9°USW00026438
1933Jun50.3°F51.5°F-1.1°USW00026438
1933Jul53.8°F56.0°F-2.2°USW00026438
1933Aug50.3°F55.2°F-5.0°USW00026438
1933Sep46.4°F49.3°F-2.9°USW00026438
1933Oct33.5°F39.3°F-5.9°USW00026438
1933Nov31.7°F31.1°F+0.6°USW00026438
1933Dec15.1°F27.2°F-12.1°USW00026438
1934Jan15.3°F24.1°F-8.9°USW00026438
1934Feb34.1°F27.0°F+7.1°USW00026438
1934Mar30.8°F31.8°F-1.0°USW00026438
1934Apr36.0°F37.7°F-1.7°USW00026438
1934May42.2°F45.1°F-3.0°USW00026438
1934Jun48.5°F51.5°F-2.9°USW00026438
1934Jul54.1°F56.0°F-1.9°USW00026438
1934Aug53.1°F55.2°F-2.1°USW00026438
1934Sep47.7°F49.3°F-1.6°USW00026438
1934Oct39.5°F39.3°F+0.2°USW00026438
1934Nov33.1°F31.1°F+2.0°USW00026438
1934Dec25.9°F27.2°F-1.3°USW00026438
1935Jan21.5°F24.1°F-2.6°USW00026438
1935Feb31.8°F27.0°F+4.7°USW00026438
1935Mar27.0°F31.8°F-4.8°USW00026438
1935Apr35.8°F37.7°F-1.9°USW00026438
1935May45.7°F45.1°F+0.5°USW00026438
1935Jun52.0°F51.5°F+0.5°USW00026438
1935Jul55.0°F56.0°F-1.1°USW00026438
1935Aug55.3°F55.2°F+0.1°USW00026438
1935Sep49.7°F49.3°F+0.5°USW00026438
1935Oct38.6°F39.3°F-0.7°USW00026438
1935Nov30.5°F31.1°F-0.6°USW00026438
1935Dec25.9°F27.2°F-1.3°USW00026438
1936Jan29.1°F24.1°F+5.0°USW00026438
1936Feb26.1°F27.0°F-0.9°USW00026438
1936Mar28.5°F31.8°F-3.3°USW00026438
1936Apr39.1°F37.7°F+1.4°USW00026438
1936May42.6°F45.1°F-2.5°USW00026438
1936Jun58.4°F51.5°F+6.9°USW00026438
1936Jul59.7°F56.0°F+3.7°USW00026438
1936Aug58.0°F55.2°F+2.7°USW00026438
1936Sep49.0°F49.3°F-0.2°USW00026438
1936Oct44.3°F39.3°F+5.0°USW00026438
1936Nov36.3°F31.1°F+5.2°USW00026438
1936Dec23.4°F27.2°F-3.8°USW00026438
1937Jan32.2°F24.1°F+8.1°USW00026438
1937Feb22.6°F27.0°F-4.5°USW00026438
1937Mar32.0°F31.8°F+0.2°USW00026438
1937Apr39.3°F37.7°F+1.7°USW00026438
1937May44.2°F45.1°F-0.9°USW00026438
1937Jun49.5°F51.5°F-2.0°USW00026438
1937Jul53.9°F56.0°F-2.1°USW00026438
1937Aug54.8°F55.2°F-0.5°USW00026438
1937Sep50.5°F49.3°F+1.2°USW00026438
1937Oct47.5°F39.3°F+8.2°USW00026438
1938Mar31.2°F31.8°F-0.6°USW00026438
1938Apr39.6°F37.7°F+1.9°USW00026438
1938May43.2°F45.1°F-1.9°USW00026438
1938Jun48.3°F51.5°F-3.1°USW00026438
1938Jul52.7°F56.0°F-3.4°USW00026438
1939Mar28.5°F31.8°F-3.3°USW00026438
1939Apr36.8°F37.7°F-0.9°USW00026438
1939May44.4°F45.1°F-0.8°USW00026438
1939Jun50.9°F51.5°F-0.6°USW00026438
1939Jul53.5°F56.0°F-2.6°USW00026438
1939Aug51.7°F55.2°F-3.6°USW00026438
1939Sep50.0°F49.3°F+0.7°USW00026438
1939Oct38.2°F39.3°F-1.1°USW00026438
1939Nov29.8°F31.1°F-1.3°USW00026438
1939Dec29.9°F27.2°F+2.6°USW00026438
1940Jan29.5°F24.1°F+5.3°USW00026438
1940Feb33.0°F27.0°F+6.0°USW00026438
1940Mar31.5°F31.8°F-0.3°USW00026438
1940Apr41.4°F37.7°F+3.8°USW00026438
1940Jun51.3°F51.5°F-0.2°USW00026438
1940Jul56.1°F56.0°F+0.1°USW00026438
1940Aug53.3°F55.2°F-1.9°USW00026438
1940Sep49.4°F49.3°F+0.2°USW00026438
1940Oct40.6°F39.3°F+1.3°USW00026438
1940Nov31.7°F31.1°F+0.6°USW00026438
1940Dec31.4°F27.2°F+4.2°USW00026438
1941Feb32.9°F27.0°F+5.8°USW00026438
1941Mar35.2°F31.8°F+3.4°USW00026438
1941Apr40.7°F37.7°F+3.1°USW00026438
1941May46.0°F45.1°F+0.8°USW00026438
1941Jun52.4°F51.5°F+0.9°USW00026438
1941Jul51.9°F56.0°F-4.1°USW00026438
1941Aug58.0°F55.2°F+2.8°USW00026438
1941Sep52.1°F49.3°F+2.8°USW00026438
1941Oct42.5°F39.3°F+3.2°USW00026438
1941Nov26.2°F31.1°F-4.9°USW00026438
1941Dec27.1°F27.2°F-0.1°USW00026438
1942Jan30.9°F24.1°F+6.7°USW00026438
1942Feb35.3°F27.0°F+8.2°USW00026438
1942Mar30.7°F31.8°F-1.1°USW00026438
1942Apr39.8°F37.7°F+2.1°USW00026438
1942May49.1°F45.1°F+3.9°USW00026438
1942Jun51.7°F51.5°F+0.2°USW00026438
1942Jul56.2°F56.0°F+0.1°USW00026438
1942Aug55.1°F55.2°F-0.1°USW00026438
1942Sep53.0°F49.3°F+3.8°USW00026438
1942Oct41.4°F39.3°F+2.1°USW00026438
1942Nov26.9°F31.1°F-4.2°USW00026438
1942Dec12.7°F27.2°F-14.5°USW00026438
1943Jan20.1°F24.1°F-4.0°USW00026438
1943Feb26.9°F27.0°F-0.2°USW00026438
1943Mar32.0°F31.8°F+0.2°USW00026438
1943Apr38.8°F37.7°F+1.1°USW00026438
1943May46.8°F45.1°F+1.7°USW00026438
1943Jun52.4°F51.5°F+1.0°USW00026438
1943Jul55.1°F56.0°F-0.9°USW00026438
1943Aug54.9°F55.2°F-0.3°USW00026438
1943Sep47.8°F49.3°F-1.5°USW00026438
1943Oct40.7°F39.3°F+1.4°USW00026438
1943Nov34.6°F31.1°F+3.5°USW00026438
1943Dec30.5°F27.2°F+3.3°USW00026438
1944Jan26.6°F24.1°F+2.5°USW00026438
1944Feb33.0°F27.0°F+5.9°USW00026438
1944Mar33.1°F31.8°F+1.4°USW00026438
1944Apr36.0°F37.7°F-1.7°USW00026438
1944May43.9°F45.1°F-1.2°USW00026438
1944Jun53.0°F51.5°F+1.5°USW00026438
1944Jul55.7°F56.0°F-0.3°USW00026438
1944Aug57.6°F55.2°F+2.3°USW00026438
1944Sep49.5°F49.3°F+0.3°USW00026438
1944Oct40.7°F39.3°F+1.4°USW00026438
1944Nov33.2°F31.1°F+2.1°USW00026438
1944Dec28.6°F27.2°F+1.4°USW00026438
1945Jan33.2°F24.1°F+9.0°USW00026438
1945Feb30.5°F27.0°F+3.5°USW00026438
1945Mar31.8°F31.8°F+0.1°USW00026438
1945Apr36.7°F37.7°F-0.9°USW00026438
1945May44.5°F45.1°F-0.6°USW00026438
1945Jun52.0°F51.5°F+0.6°USW00026438
1945Jul55.9°F56.0°F-0.2°USW00026438
1945Aug54.1°F55.2°F-1.2°USW00026438
1945Sep50.1°F49.3°F+0.9°USW00026438
1945Oct39.5°F39.3°F+0.2°USW00026438
1945Nov25.8°F31.1°F-5.3°USW00026438
1945Dec28.4°F27.2°F+1.2°USW00026438
1946Jan27.4°F24.1°F+3.3°USW00026438
1946Feb28.5°F27.0°F+1.5°USW00026438
1946Mar25.8°F31.8°F-5.9°USW00026438
1946Apr35.5°F37.7°F-2.2°USW00026438
1946May43.6°F45.1°F-1.5°USW00026438
1946Jun53.9°F51.5°F+2.4°USW00026438
1946Jul57.6°F56.0°F+1.6°USW00026438
1946Aug53.8°F55.2°F-1.5°USW00026438
1946Sep49.7°F49.3°F+0.5°USW00026438
1946Oct41.2°F39.3°F+1.9°USW00026438
1946Nov28.9°F31.1°F-2.2°USW00026438
1946Dec17.6°F27.2°F-9.6°USW00026438
1947Jan13.2°F24.1°F-10.9°USW00026438
1947Feb28.6°F27.0°F+1.5°USW00026438
1947Mar34.8°F31.8°F+3.0°USW00026438
1947Apr38.3°F37.7°F+0.6°USW00026438
1947May43.5°F45.1°F-1.6°USW00026438
1947Jun50.5°F51.5°F-0.9°USW00026438
1947Jul58.6°F56.0°F+2.6°USW00026438
1947Aug57.4°F55.2°F+2.1°USW00026438
1947Sep49.1°F49.3°F-0.2°USW00026438
1947Oct41.4°F39.3°F+2.1°USW00026438
1947Nov36.1°F31.1°F+5.0°USW00026438
1947Dec32.3°F27.2°F+5.0°USW00026438
1948Jan28.3°F24.1°F+4.2°USW00026438
1948Feb24.1°F27.0°F-2.9°USW00026438
1948Mar28.2°F31.8°F-3.6°USW00026438
1948Apr40.0°F37.7°F+2.3°USW00026438
1948May45.2°F45.1°F+0.1°USW00026438
1948Jun52.3°F51.5°F+0.8°USC00502147
1948Jul54.3°F56.0°F-1.7°USW00026438
1948Aug55.6°F55.2°F+0.4°USW00026438
1948Sep48.4°F49.3°F-0.9°USW00026438
1948Oct38.9°F39.3°F-0.4°USW00026438
1948Nov25.5°F31.1°F-5.6°USW00026438
1948Dec19.4°F27.2°F-7.8°USW00026438
1949Sep50.2°F49.3°F+1.0°USW00026438
1949Oct41.1°F39.3°F+1.8°USW00026438
1949Nov34.6°F31.1°F+3.5°USW00026438
1949Dec21.2°F27.2°F-6.0°USW00026438
1950Jan25.6°F24.1°F+1.5°USW00026438
1950Feb19.7°F27.0°F-7.3°USW00026438
1950Mar34.5°F31.8°F+2.7°USW00026438
1950Apr37.2°F37.7°F-0.5°USW00026438
1950May43.0°F45.1°F-2.2°USW00026438
1950Jun50.9°F51.5°F-0.6°USW00026438
1950Jul54.7°F56.0°F-1.3°USW00026438
1950Aug57.9°F55.2°F+2.7°USW00026438
1950Sep48.7°F49.3°F-0.5°USW00026438
1950Oct39.2°F39.3°F-0.1°USW00026438
1950Nov24.4°F31.1°F-6.7°USW00026438
1950Dec24.4°F27.2°F-2.8°USW00026438
1951Jan18.4°F24.1°F-5.8°USW00026438
1951Feb26.2°F27.0°F-0.8°USW00026438
1951Mar24.0°F31.8°F-7.8°USW00026438
1951Apr37.4°F37.7°F-0.2°USW00026438
1951May44.4°F45.1°F-0.7°USW00026438
1951Jun49.2°F51.5°F-2.3°USW00026438
1951Jul60.0°F56.0°F+4.0°USW00026438
1951Aug55.7°F55.2°F+0.5°USW00026438
1951Sep50.1°F49.3°F+0.8°USW00026438
1951Oct38.2°F39.3°F-1.1°USW00026438
1951Nov33.3°F31.1°F+2.2°USW00026438
1951Dec23.8°F27.2°F-3.4°USW00026438
1952Jan18.9°F24.1°F-5.3°USW00026438
1952Feb28.9°F27.0°F+1.8°USW00026438
1952Mar30.9°F31.8°F-0.8°USW00026438
1952Apr35.3°F37.7°F-2.3°USW00026438
1952May43.4°F45.1°F-1.7°USW00026438
1952Jun51.6°F51.5°F+0.1°USW00026438
1952Jul54.8°F56.0°F-1.2°USW00026438
1952Aug56.7°F55.2°F+1.4°USW00026438
1952Sep50.5°F49.3°F+1.3°USW00026438
1952Oct42.2°F39.3°F+2.9°USW00026438
1952Nov36.5°F31.1°F+5.4°USW00026438
1952Dec28.4°F27.2°F+1.2°USW00026438
1953Jan21.4°F24.1°F-2.7°USW00026438
1953Feb27.8°F27.0°F+0.8°USW00026438
1953Mar29.3°F31.8°F-2.5°USW00026438
1953Apr38.6°F37.7°F+0.9°USW00026438
1953May44.6°F45.1°F-0.6°USW00026438
1953Jun55.5°F51.5°F+4.0°USW00026438
1953Jul58.2°F56.0°F+2.1°USW00026438
1953Aug56.0°F55.2°F+0.7°USW00026438
1953Sep48.6°F49.3°F-0.6°USW00026438
1953Oct38.1°F39.3°F-1.2°USW00026438
1953Nov32.0°F31.1°F+0.9°USW00026438
1953Dec29.6°F27.2°F+2.4°USW00026438
1954Jan24.7°F24.1°F+0.6°USW00026438
1954Feb18.1°F27.0°F-8.9°USW00026438
1954Mar31.4°F31.8°F-0.4°USW00026438
1954Apr36.8°F37.7°F-0.8°USW00026438
1954May45.1°F45.1°F+0.0°USW00026438
1954Jun51.6°F51.5°F+0.2°USW00026438
1954Jul56.5°F56.0°F+0.5°USW00026438
1954Aug55.4°F55.2°F+0.1°USW00026438
1954Sep51.9°F49.3°F+2.6°USW00026438
1954Oct41.9°F39.3°F+2.6°USW00026438
1954Nov34.8°F31.1°F+3.7°USW00026438
1954Dec18.1°F27.2°F-9.2°USW00026438
1955Jan29.5°F24.1°F+5.3°USW00026438
1955Feb27.3°F27.0°F+0.3°USW00026438
1955Mar30.7°F31.8°F-1.1°USW00026438
1955Apr34.7°F37.7°F-3.0°USW00026438
1955May42.8°F45.1°F-2.4°USW00026438
1955Jun47.3°F51.5°F-4.2°USW00026438
1955Jul56.4°F56.0°F+0.4°USW00026438
1955Aug54.2°F55.2°F-1.0°USW00026438
1955Sep48.7°F49.3°F-0.5°USW00026438
1955Oct36.5°F39.3°F-2.8°USW00026438
1955Nov24.1°F31.1°F-7.0°USW00026438
1955Dec21.7°F27.2°F-5.5°USW00026438
1956Jan19.5°F24.1°F-4.6°USW00026438
1956Feb21.2°F27.0°F-5.8°USW00026438
1956Mar27.4°F31.8°F-4.4°USW00026438
1956Apr36.2°F37.7°F-1.4°USW00026438
1956May41.4°F45.1°F-3.7°USW00026438
1956Jun49.1°F51.5°F-2.4°USW00026438
1956Jul55.8°F56.0°F-0.2°USW00026438
1956Aug54.9°F55.2°F-0.3°USW00026438
1956Sep48.2°F49.3°F-1.1°USW00026438
1956Oct36.8°F39.3°F-2.5°USW00026438
1956Nov26.8°F31.1°F-4.3°USW00026438
1956Dec20.8°F27.2°F-6.5°USW00026438
1957Jan24.9°F24.1°F+0.7°USW00026438
1957Feb28.3°F27.0°F+1.3°USW00026438
1957Mar35.5°F31.8°F+3.7°USW00026438
1957Apr40.3°F37.7°F+2.7°USW00026438
1957May47.7°F45.1°F+2.6°USW00026438
1957Jun55.9°F51.5°F+4.5°USW00026438
1957Jul57.5°F56.0°F+1.4°USW00026438
1957Aug59.4°F55.2°F+4.2°USW00026438
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2013Jan30.1°F24.1°F+6.0°USW00026438
2013Feb31.4°F27.0°F+4.4°USW00026438
2013Mar30.3°F31.8°F-1.5°USW00026438
2013Apr33.5°F37.7°F-4.1°USW00026438
2013May44.3°F45.1°F-0.9°USW00026438
2013Jun55.7°F51.5°F+4.2°USW00026438
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2013Aug55.7°F55.2°F+0.5°USW00026438
2013Sep50.2°F49.3°F+0.9°USW00026438
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2013Nov31.6°F31.1°F+0.5°USW00026438
2013Dec26.8°F27.2°F-0.4°USW00026438
2014Jan35.8°F24.1°F+11.6°USW00026438
2014Feb26.4°F27.0°F-0.6°USW00026438
2014Mar33.6°F31.8°F+1.8°USW00026438
2014Apr38.7°F37.7°F+1.0°USW00026438
2014May50.8°F45.1°F+5.7°USW00026438
2014Jun51.9°F51.5°F+0.4°USW00026438
2014Jul57.1°F56.0°F+1.1°USW00026438
2014Aug55.0°F55.2°F-0.3°USW00026438
2014Sep52.0°F49.3°F+2.7°USW00026438
2014Oct40.3°F39.3°F+1.0°USW00026438
2014Nov36.7°F31.1°F+5.6°USW00026438
2014Dec34.7°F27.2°F+7.5°USW00026438
2015Jan29.7°F24.1°F+5.5°USW00026438
2015Feb32.4°F27.0°F+5.4°USW00026438
2015Mar33.5°F31.8°F+1.7°USW00026438
2015Apr39.8°F37.7°F+2.1°USW00026438
2015May49.0°F45.1°F+3.8°USW00026438
2015Jun54.4°F51.5°F+3.0°USW00026438
2015Jul57.8°F56.0°F+1.8°USW00026438
2015Aug58.7°F55.2°F+3.5°USW00026438
2015Sep48.7°F49.3°F-0.6°USW00026438
2015Oct44.3°F39.3°F+4.9°USW00026438
2015Nov32.4°F31.1°F+1.3°USW00026438
2015Dec31.4°F27.2°F+4.2°USW00026438
2016Jan36.4°F24.1°F+12.2°USW00026438
2016Feb36.9°F27.0°F+9.9°USW00026438
2016Mar38.3°F31.8°F+6.6°USW00026438
2016Apr42.4°F37.7°F+4.7°USW00026438
2016May49.9°F45.1°F+4.7°USW00026438
2016Jun55.1°F51.5°F+3.6°USW00026438
2016Jul59.8°F56.0°F+3.8°USW00026438
2016Aug57.2°F55.2°F+2.0°USW00026438
2016Sep51.5°F49.3°F+2.3°USW00026438
2016Oct42.1°F39.3°F+2.8°USW00026438
2016Nov34.8°F31.1°F+3.7°USW00026438
2016Dec25.9°F27.2°F-1.3°USW00026438
2017Jan24.7°F24.1°F+0.6°USW00026438
2017Feb27.3°F27.0°F+0.3°USW00026438
2017Mar23.7°F31.8°F-8.0°USW00026438
2017Apr40.0°F37.7°F+2.3°USW00026438
2017May44.6°F45.1°F-0.6°USW00026438
2017Jun52.2°F51.5°F+0.8°USW00026438
2017Jul56.2°F56.0°F+0.2°USW00026438
2017Aug52.8°F55.2°F-2.4°USR0000ABRO
2017Sep49.8°F49.3°F+0.5°USW00026438
2017Oct40.9°F39.3°F+1.6°USW00026438
2017Nov31.0°F31.1°F-0.1°USW00026438
2017Dec32.4°F27.2°F+5.2°USW00026438
2018Jan28.1°F24.1°F+4.0°USW00026438
2018Feb29.1°F27.0°F+2.0°USW00026438
2018Mar33.0°F31.8°F+1.2°USW00026438
2018Apr39.7°F37.7°F+2.0°USW00026438
2018May44.0°F45.1°F-1.1°USW00026438
2018Jun51.9°F51.5°F+0.4°USW00026438
2018Jul55.7°F56.0°F-0.3°USW00026438
2018Aug56.5°F55.2°F+1.2°USW00026438
2018Sep49.7°F49.3°F+0.5°USR0000ABRO
2018Oct40.8°F39.3°F+1.5°USR0000ABRO
2018Nov36.9°F31.1°F+5.8°USW00026438
2018Dec30.5°F27.2°F+3.3°USW00026438
2019Jan28.7°F24.1°F+4.6°USW00026438
2019Feb31.0°F27.0°F+3.9°USW00026438
2019Mar37.8°F31.8°F+6.1°USW00026438
2019Apr40.6°F37.7°F+2.9°USW00026438
2019May46.6°F45.1°F+1.4°USW00026438
2019Jun54.8°F51.5°F+3.3°USW00026438
2019Jul59.5°F56.0°F+3.5°USW00026438
2019Aug60.0°F55.2°F+4.8°USW00026438
2019Sep51.8°F49.3°F+2.5°USW00026438
2019Oct42.9°F39.3°F+3.6°USW00026438
2019Nov38.4°F31.1°F+7.3°USW00026438
2019Dec32.0°F27.2°F+4.8°USW00026438
2020Jan14.3°F24.1°F-9.8°USW00026438
2020Feb26.9°F27.0°F-0.1°USW00026438
2020Mar30.7°F31.8°F-1.1°USW00026438
2020Apr39.8°F37.7°F+2.1°USW00026438
2020May48.1°F45.1°F+2.9°USW00026438
2020Jun52.5°F51.5°F+1.0°USW00026438
2020Jul58.3°F56.0°F+2.3°USW00026438
2020Aug57.1°F55.2°F+1.8°USW00026438
2020Sep50.4°F49.3°F+1.2°USW00026438
2020Oct40.5°F39.3°F+1.2°USW00026438
2020Nov30.5°F31.1°F-0.6°USW00026438
2020Dec30.3°F27.2°F+3.0°USW00026438
2021Jan31.6°F24.1°F+7.5°USW00026438
2021Feb25.8°F27.0°F-1.2°USW00026438
2021Mar27.5°F31.8°F-4.3°USW00026438
2021Apr36.4°F37.7°F-1.3°USW00026438
2021May45.5°F45.1°F+0.3°USW00026438
2021Jun53.1°F51.5°F+1.6°USW00026438
2021Jul54.9°F56.0°F-1.1°USR0000ABRO
2021Aug55.9°F55.2°F+0.7°USW00026438
2021Sep48.0°F49.3°F-1.3°USW00026438
2021Oct40.3°F39.3°F+1.0°USW00026438
2021Nov22.7°F31.1°F-8.4°USW00026438
2021Dec25.9°F27.2°F-1.3°USW00026438
2022Jan25.1°F24.1°F+1.0°USW00026438
2022Feb32.5°F27.0°F+5.4°USW00026438
2022Mar34.8°F31.8°F+3.0°USW00026438
2022Apr38.8°F37.7°F+1.1°USW00026438
2022May47.2°F45.1°F+2.1°USW00026438
2022Jun55.6°F51.5°F+4.1°USW00026438
2022Jul56.1°F56.0°F+0.1°USW00026438
2022Aug55.1°F55.2°F-0.1°USW00026438
2022Sep49.1°F49.3°F-0.2°USW00026438
2022Oct41.3°F39.3°F+1.9°USW00026438
2022Nov31.9°F31.1°F+0.8°USW00026438
2022Dec26.3°F27.2°F-0.9°USW00026438
2023Jan32.4°F24.1°F+8.2°USW00026438
2023Feb28.0°F27.0°F+0.9°USW00026438
2023Mar31.4°F31.8°F-0.4°USW00026438
2023Apr36.3°F37.7°F-1.4°USW00026438
2023May43.5°F45.1°F-1.6°USW00026438
2023Jun50.1°F51.5°F-1.4°USW00026438
2023Jul54.9°F56.0°F-1.1°USW00026438
2023Aug56.1°F55.2°F+0.9°USW00026438
2023Sep48.0°F49.3°F-1.2°USW00026438
2023Oct39.9°F39.3°F+0.6°USW00026438
2023Nov32.2°F31.1°F+1.1°USW00026438
2023Dec24.0°F27.2°F-3.2°USW00026438
2024Jan22.7°F24.1°F-1.4°USW00026438
2024Feb26.9°F27.0°F-0.2°USW00026438
2024Mar31.3°F31.8°F-0.5°USW00026438
2024Apr37.8°F37.7°F+0.1°USW00026438
2024May43.4°F45.1°F-1.8°USW00026438
2024Jun51.7°F51.5°F+0.3°USW00026438
2024Jul52.9°F56.0°F-3.1°USW00026438
2024Aug52.8°F55.2°F-2.5°USW00026438
2024Sep46.8°F49.3°F-2.4°USW00026438
2024Oct38.1°F39.3°F-1.2°USW00026438
2024Nov30.0°F31.1°F-1.1°USW00026438
2024Dec32.6°F27.2°F+5.4°USW00026438
2025Jan31.5°F24.1°F+7.4°USW00026438
2025Feb26.9°F27.0°F-0.2°USR0000ABRO
2025Mar36.6°F31.8°F+4.8°USW00026438
2025Apr40.2°F37.7°F+2.5°USW00026438
2025May46.0°F45.1°F+0.9°USW00026438
2025Jun52.1°F51.5°F+0.6°USW00026438
2025Jul57.4°F56.0°F+1.4°USW00026438
2025Aug56.5°F55.2°F+1.2°USW00026438
2025Sep51.9°F49.3°F+2.6°USW00026438
2025Oct43.5°F39.3°F+4.2°USW00026438
2025Nov31.6°F31.1°F+0.5°USW00026438
2025Dec21.8°F27.2°F-5.4°USW00026438
2026Jan23.6°F24.1°F-0.6°USW00026438

Showing 1,130 of 1,130 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).

53

Initial gaps

19

Filled

34

Unfillable

Fill stations: COOPER LANDING 5 W, AK US, COOPER LANDING KENAI R, AK US, COOPER LAKE PROJECT, AK US, BROADVIEW 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
January24.1°F26/26
February27.0°F26/26
March31.8°F26/26
April37.7°F26/26
May45.1°F26/26
June51.5°F26/26
July56.0°F26/26
August55.2°F26/26
September49.3°F26/26
October39.3°F26/26
November31.1°F26/26
December27.2°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 Cooper Landing, Alaska getting warmer?

Based on 94+ years of NOAA temperature records, Cooper Landing 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 Cooper Landing?

The warmest year on record in Cooper Landing was 2016, based on average annual temperature anomaly from NOAA station data.

Where does the temperature data for Cooper Landing come from?

Data comes from the SEWARD AIRPORT, AK US weather station, part of NOAA's Global Historical Climatology Network. This station has recorded 94+ years of temperature observations used to build Cooper Landing's climate profile.

How are the climate visualizations for Cooper Landing created?

Three visualizations are generated from Cooper Landing'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 Cooper Landing's temperature data?

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

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