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Juneau weather

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Juneau weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Juneau weather in numbers

from 30 years of measured normals

Juneau swings 41°F across the year, from 65°F highs in August to 24°F lows in February, and September is usually the wettest month in a year that brings about 135 in of precipitation.

Warmest month
August
65°F average high
Coldest month
February
24°F average low
Wettest month
September
135 in a year
Below freezing
5 months
January, February, March, November and December
Comfortable
3 months
June, July and August
Residents
32,000
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The weather map: all three models at once

NWS, American, European side by side around Juneau and nearby towns.Live rain radar →
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Juneau hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Juneau 10-day forecast, out to 14 days

where the models agree, and where they split

Juneau, Alaska (AK) is at its warmest in Aug (average highs near 65°F) and coldest in Feb (lows around 24°F), with roughly 135 in of precipitation across the year. Below, compare what NWS, American, European forecast for Juneau right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Juneau climate by month

average daytime high and overnight low across a typical year
Jan
34°
26°
Feb
32°
24°
Mar
35°
26°
Apr
42°
32°
May
51°
39°
Jun
61°
49°
Jul
64°
54°
Aug
65°
53°
Sep
54°
47°
Oct
46°
38°
Nov
36°
29°
Dec
36°
29°

Which forecast is most accurate in Juneau?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
93
/100rank #1
89±1.1°F97±1.0 mph9597% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
76
/100rank #2
69±3.1°F94±1.8 mph7184% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Common questions

What's the weather in Juneau today?
On this page we show what NWS, American, European each forecast for Juneau today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Juneau today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Juneau and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Juneau?
Over the last 30 days, the European model has been the most accurate for Juneau (CheckWeather Score 93/100), ahead of the American at 76. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Juneau?
August is typically the warmest month in Juneau, with average highs around 65°F.
How cold does Juneau get?
The coldest month in Juneau is February, when overnight lows average about 24°F.
How much rain does Juneau get?
Juneau sees roughly 135 in of precipitation a year, with September usually the wettest month.

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