Alaska has an average annual temperature of
28.8°F
(across all 3 cities) with approximately
1012 mm of annual precipitation
and average humidity of 84%.
The warmest city is Fairbanks
with average July highs of 76.8°F,
while Fairbanks
is the coldest with average January lows of -36.9°F.
This page covers 45 years of NASA POWER climate data (1981–2025)
including temperature, rainfall, humidity, wind speed, and solar radiation.
Jul is typically the warmest month across Alaska with average highs around
74.8°F, while
Jan is the coldest with average lows near
-22.9°F.
Aug is the wettest month with approximately
130 mm of rainfall on average.
Month
Max Temp
Min Temp
Avg Temp
Rain (mm)
Humidity
Wind (m/s)
Solar (kWh/m²)
Jan
30.6°F
-22.9°F
3.9°F
78
90%
2.6
0.20
Feb
32.4°F
-19.1°F
6.6°F
64
89%
2.4
0.90
Mar
35.4°F
-12.1°F
11.7°F
53
88%
2.4
2.50
Apr
46°F
2.7°F
24.4°F
51
84%
1.7
4.20
May
63.7°F
24.1°F
43.9°F
62
76%
1.3
5.00
Jun
73.4°F
36.9°F
55.2°F
81
74%
1.2
5.40
Jul
74.8°F
43°F
59°F
105
78%
1.2
4.80
Aug
71.4°F
37.6°F
54.5°F
130
80%
1.3
3.60
Sep
60.8°F
25.9°F
43.3°F
126
83%
1.3
2.30
Oct
46.9°F
4.6°F
25.9°F
99
88%
1.7
1.10
Nov
32.2°F
-11.9°F
10.2°F
81
91%
2.1
0.30
Dec
31.5°F
-17.3°F
7.2°F
90
91%
2.4
0.10
📈 Alaska Yearly Climate Trends
🌡️ Annual Temperature Trend
State-wide avg annual high & low · Last 10 years
📈 Alaska Long-Term Climate Trends (1981–2025)
This chart shows how Alaska's average temperatures have shifted across 45 years.
Use the range buttons to focus on recent decades or view the full historical record.
Data is averaged across all 3 cities in the state.
🌧️ Annual Precipitation Trend
State-wide avg annual precipitation · Last 10 years · mm/year
🔗 Explore Cities in Alaska
Browse detailed weather history, monthly averages, and 45-year climate trends for every city in Alaska.
Anchorage is the wettest city in Alaska with approximately 1606 mm of annual precipitation on average. View Anchorage weather history →
What is the warmest month in Alaska?▼
Jul is the warmest month across Alaska, with state-wide average highs of 74.8°F and average lows of 43°F.
How many cities in Alaska have weather data?▼
TownPillar has historical weather data for 3 cities in Alaska, covering 45 years of NASA POWER climate records from 1981 to 2025.
Which month has the most sunshine in Alaska?▼
Jun is the sunniest month across Alaska with an average solar radiation of 5.40 kWh/m²/day state-wide. This solar radiation data from NASA POWER is useful for solar energy planning, agriculture, and understanding seasonal sunshine availability.
Where does this climate data come from?▼
All data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis data. It includes monthly temperature, precipitation, humidity, wind speed, and solar radiation at 0.5° × 0.625° spatial resolution.
📚 Data Source
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources). Data covers 45 years (1981–2025) across 3 cities in Alaska at monthly temporal resolution.