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, and Fairbanks.

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Anchorage
Alaska, United States
Juneau
Wisconsin, United States
Fairbanks
Alaska, United States
Map

Average High and Low Temperature in Alaska

Average High and Low Temperature in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec-20°F-20°F-10°F-10°F0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F551368236213812754-13732NowNowAnchorageAnchorageJuneauJuneauFairbanksFairbanks
The daily average high and low air temperature at 2 meters above the ground.
HighJanFebMarAprMayJunJulAugSepOctNovDec
Anchorage 24°F28°F36°F47°F58°F65°F67°F65°F56°F42°F29°F24°F
Juneau 27°F31°F43°F57°F68°F77°F81°F79°F71°F59°F45°F32°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 13°F17°F27°F38°F48°F58°F62°F60°F52°F41°F30°F19°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 AMNowNowfreezingfreezingcoldcoolvery coldvery coldcomfortable

Juneau

Average Hourly Temperature in JuneauJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingfreezingcoldcoolwarmvery coldvery coldcomfortablecomfortable

Fairbanks

Average Hourly Temperature in FairbanksJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfrigidfrigidcoldcoolcoolcomfortablefreezingvery 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%4837674035NowNowAnchorageAnchorageJuneauJuneauFairbanksFairbanks
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 41%42%46%46%50%57%65%66%65%56%47%42%
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%39133912315NowNowAnchorageAnchorageJuneauJuneauFairbanksFairbanks
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip.JanFebMarAprMayJunJulAugSepOctNovDec
Anchorage 6.6d5.1d4.2d4.0d5.3d6.7d8.6d10.7d11.3d9.6d7.2d7.6d
Juneau 4.4d3.7d6.3d8.7d10.4d11.2d10.9d10.8d8.8d7.1d6.0d5.2d
Fairbanks 3.7d2.5d1.7d1.9d4.1d7.6d9.2d9.2d7.1d5.2d3.8d4.1d

Average Monthly Rainfall in Alaska

Average Monthly Rainfall in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in3.10.34.00.42.4NowNowAnchorageAnchorageJuneauJuneauFairbanksFairbanks
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″2.0″0.7″0.4″
Juneau 0.4″0.6″1.4″2.8″3.2″4.0″3.5″3.4″3.2″2.3″1.7″0.8″
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 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in9.74.9NowNowAnchorageAnchorageJuneauJuneauFairbanksFairbanks
The average snowfall accumulated over the course of a sliding 31-day period centered on the day in question.
SnowfallJanFebMarAprMayJunJulAugSepOctNovDec
Anchorage 7.4″6.6″3.6″1.0″0.1″0.0″0.0″0.0″0.1″2.8″8.1″9.6″
Juneau 4.6″4.4″2.9″0.7″0.0″0.0″0.0″0.0″0.0″0.1″1.4″4.7″
Fairbanks 4.4″3.4″1.9″1.3″0.2″0.0″0.0″0.0″0.5″3.4″5.0″5.1″

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 hr19.45.515.49.021.83.7NowNowAnchorageAnchorageJuneauJuneauFairbanksFairbanks
The number of hours during which the Sun is at least partly above the horizon.
DaylightJanFebMarAprMayJunJulAugSepOctNovDec
Anchorage 6.6h9.1h12.0h14.9h17.6h19.2h18.2h15.6h12.8h9.9h7.2h5.6h
Juneau 9.4h10.6h12.0h13.5h14.7h15.4h15.0h13.9h12.4h11.0h9.7h9.0h
Fairbanks 5.3h8.6h12.0h15.4h18.9h21.5h19.8h16.3h12.9h9.5h6.1h3.9h

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%38NowNowAnchorageAnchorageJuneauJuneau
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 0.0d0.0d0.0d0.1d1.0d5.2d10.6d9.8d3.9d0.4d0.0d0.0d
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 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph6.64.212.68.17.7NowNowAnchorageAnchorageJuneauJuneauFairbanksFairbanks
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 12.312.412.412.210.79.48.68.49.610.811.411.6
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°F60°F60°F65°F65°F70°F70°F75°F75°F55326935NaNNowNowAnchorageAnchorageJuneauJuneau
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 37°F36°F36°F39°F44°F54°F65°F69°F64°F54°F45°F40°F

Tourism Score in Alaska

Tourism Score in AlaskaJanFebMarAprMayJunJulAugSepOctNovDec002244668810104.56.74.6NowNowAnchorageAnchorageJuneauJuneauFairbanksFairbanks
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 AlaskaJanFebMarAprMayJunJulAugSepOctNovDec002244668810100.24.8NowNowAnchorageAnchorageJuneauJuneauFairbanksFairbanks
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%NowNowAnchorageAnchorageJuneauJuneauFairbanksFairbanks
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°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°FNowNowAnchorageAnchorageJuneauJuneauFairbanksFairbanks
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 kWh7 kWh7 kWh5.80.17.01.65.7NowNowAnchorageAnchorageJuneauJuneauFairbanksFairbanks
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 1.92.84.05.26.26.86.86.04.83.32.01.6
Fairbanks 0.10.82.34.05.25.65.13.82.31.00.30.0

This report illustrates the typical weather for Anchorage, Juneau, 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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