Climate and Average Weather Year Round in Alaska United States

We show the climate in Alaska by comparing the average weather in 3 representative places: Anchorage, Juneau International Airport, and Fairbanks.

You can add or remove cities to customize the report to your liking. See all locations in Alaska.

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Anchorage
Alaska, United States
Juneau International Airport
Alaska, United States
Fairbanks
Alaska, United States
Map

Average High and Low Temperature in Alaska

Average High and Low Temperature in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec-30°F-30°F-20°F-20°F-10°F-10°F-0°F-0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F5513682351653254-1373217-29-9NowNowJuneau International AirportJuneau International AirportAnchorageAnchorage
The daily average high and low air temperature at 2 meters above the ground. The thin dotted lines are the corresponding perceived temperatures.
HighJanFebMarAprMayJunJulAugSepOctNovDec
Anchorage 24°F28°F36°F47°F58°F65°F67°F65°F56°F42°F29°F24°F
Juneau International Airport 33°F35°F40°F49°F57°F63°F64°F62°F55°F47°F37°F33°F
Fairbanks 3°F11°F26°F45°F61°F71°F72°F66°F54°F33°F11°F4°F
LowJanFebMarAprMayJunJulAugSepOctNovDec
Anchorage 13°F16°F21°F32°F43°F51°F55°F52°F44°F31°F19°F14°F
Juneau International Airport 25°F26°F29°F35°F42°F48°F51°F50°F45°F39°F30°F26°F
Fairbanks -13°F-8°F2°F23°F40°F51°F54°F48°F37°F19°F-2°F-11°F

Anchorage

Average Hourly Temperature in AnchorageJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingfreezingcoldcoldcoolvery coldvery coldcomfortable

Juneau International Airport

Average Hourly Temperature in Juneau International AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingfreezingvery coldcoldcool

Fairbanks

Average Hourly Temperature in FairbanksJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfrigidfrigidcoldcoolcoolcomfortablefreezingvery coldvery cold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Chance of Clearer Skies in Alaska

Chance of Clearer Skies in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%4837331935NowNowFairbanksFairbanksJuneau International AirportJuneau International AirportAnchorageAnchorage
The percentage of time the sky is clear, mostly clear, or partly cloudy (i.e., less than 60% of the sky is covered by clouds).
Clearer SkiesJanFebMarAprMayJunJulAugSepOctNovDec
Anchorage 41%44%47%43%42%41%39%42%40%43%43%39%
Juneau International Airport 22%26%29%28%32%30%28%29%23%20%22%23%
Fairbanks 40%42%45%42%45%41%39%38%36%37%37%36%

Daily Chance of Precipitation in Alaska

Daily Chance of Precipitation in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%39137442315FairbanksFairbanksJuneau International AirportJuneau International AirportAnchorageAnchorage
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip.JanFebMarAprMayJunJulAugSepOctNovDec
Anchorage 6.6d5.3d4.2d4.0d5.3d6.7d8.6d10.7d11.3d9.6d7.2d7.6d
Juneau International Airport 19.1d16.2d16.3d15.1d13.5d13.2d15.3d17.7d19.9d22.4d19.9d19.8d
Fairbanks 3.7d2.6d1.7d1.9d4.1d7.6d9.2d9.2d7.1d5.2d3.8d4.1d

Average Monthly Rainfall in Alaska

Average Monthly Rainfall in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 in16 in16 in3.10.315.14.22.4FairbanksFairbanksJuneau International AirportJuneau International AirportAnchorageAnchorage
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.
RainfallJanFebMarAprMayJunJulAugSepOctNovDec
Anchorage 0.4″0.3″0.3″0.5″0.9″1.6″2.2″3.0″3.1″1.9″0.6″0.4″
Juneau International Airport 8.7″7.2″6.6″6.1″4.7″4.3″5.6″8.7″13.5″14.5″10.8″9.7″
Fairbanks 0.0″0.0″0.0″0.2″0.8″1.9″2.4″2.1″1.4″0.5″0.1″0.0″

Average Monthly Snowfall in Alaska

Average Monthly Snowfall in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in5 in5 in10 in10 in15 in15 in20 in20 in25 in25 in9.723.15.3NowNowFairbanksFairbanksJuneau International AirportJuneau International AirportAnchorageAnchorage
The average snowfall accumulated over the course of a sliding 31-day period centered on the day in question.
SnowfallJanFebMarAprMayJunJulAugSepOctNovDec
Anchorage 7.4″6.5″3.5″0.9″0.0″0.0″0.0″0.0″0.1″3.0″8.2″9.6″
Juneau International Airport 23.0″16.9″7.5″0.8″0.0″0.0″0.0″0.0″0.0″1.2″9.4″16.8″
Fairbanks 4.4″3.3″1.9″1.2″0.2″0.0″0.0″0.0″0.5″3.5″5.0″5.2″

Hours of Daylight in Alaska

Hours of Daylight in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec4 hr4 hr6 hr6 hr8 hr8 hr10 hr10 hr12 hr12 hr14 hr14 hr16 hr16 hr18 hr18 hr20 hr20 hr19.45.518.36.421.83.7NowNowFairbanksFairbanksJuneau International AirportJuneau International AirportAnchorageAnchorage
The number of hours during which the Sun is at least partly above the horizon.
DaylightJanFebMarAprMayJunJulAugSepOctNovDec
Anchorage 6.5h9.1h11.9h14.8h17.6h19.2h18.3h15.7h12.8h9.9h7.2h5.6h
Juneau International Airport 7.2h9.4h11.9h14.5h16.9h18.2h17.4h15.2h12.7h10.2h7.8h6.5h
Fairbanks 5.3h8.5h11.9h15.3h18.9h21.5h19.9h16.4h12.9h9.6h6.2h4.0h

Chance of Muggy Conditions in Alaska

Chance of Muggy Conditions in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%NowNowFairbanksFairbanksAnchorageAnchorage
The percentage of time that is muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).
Muggy daysJanFebMarAprMayJunJulAugSepOctNovDec
Anchorage 0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d
Juneau International Airport 0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d
Fairbanks 0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d

Average Wind Speed in Alaska

Average Wind Speed in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mph10 mph10 mph11 mph11 mph12 mph12 mph6.64.210.94.77.7NowNowFairbanksFairbanksJuneau International AirportJuneau International AirportAnchorageAnchorage
The average of mean hourly wind speeds at 10 meters above the ground.
Wind Speed (mph)JanFebMarAprMayJunJulAugSepOctNovDec
Anchorage 6.56.36.05.45.04.64.34.65.45.55.96.2
Juneau International Airport 10.59.98.86.55.24.84.75.36.78.29.910.7
Fairbanks 7.67.16.65.55.24.74.64.75.05.56.47.1

Average Water Temperature in Alaska

Average Water Temperature in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F553240NaNNowNowJuneau International AirportJuneau International AirportAnchorageAnchorage
The daily average wide-area surface water temperature.
Water Temp.JanFebMarAprMayJunJulAugSepOctNovDec
Anchorage 33°F32°F32°F33°F37°F46°F53°F54°F51°F45°F38°F34°F
Juneau International Airport 42°F41°F41°F42°F46°F50°F54°F55°F52°F48°F45°F43°F

Tourism Score in Alaska

Tourism Score in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec002244668810104.52.74.6NowNowFairbanksFairbanksAnchorageAnchorage
The tourism score, which favors clear, rainless days with perceived temperatures between 65°F and 80°F.

Beach/Pool Score in Alaska

Beach/Pool Score in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec002244668810100.2NowNowFairbanksFairbanksJuneau International AirportJuneau International AirportAnchorageAnchorage
The beach/pool score, which favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Growing Season in Alaska

Growing Season in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec0%0%20%20%40%40%60%60%80%80%100%100%NowNowFairbanksFairbanksJuneau International AirportJuneau International Airport
The percentage chance that a given day is within the growing season, defined as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Growing Degree Days in Alaska

Growing Degree Days in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F200°F200°F400°F400°F600°F600°F800°F800°F1,000°F1,000°F1,200°F1,200°FNowNowFairbanksFairbanksJuneau International AirportJuneau International AirportAnchorageAnchorage
The average growing degree days accumulated over the course of the year, where growing degree days are defined as the integral of warmth above a base temperature (50°F in this case).

Average Daily Incident Shortwave Solar Energy in Alaska

Average Daily Incident Shortwave Solar Energy in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh5.80.15.25.7NowNowJuneau International AirportJuneau International AirportAnchorageAnchorage
The average daily shortwave solar energy reaching the ground per square meter.
Solar Energy (kWh)JanFebMarAprMayJunJulAugSepOctNovDec
Anchorage 0.31.12.54.15.35.85.14.02.61.30.50.2
Juneau International Airport 0.41.12.33.84.95.14.53.62.21.10.50.2
Fairbanks 0.10.82.34.05.25.65.13.82.31.00.30.0

This report illustrates the typical weather for Anchorage, Juneau International Airport, and Fairbanks year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used on this page vary between places and are discussed in detail on each place's dedicated page:

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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