Juneau (AK) Weather & Climate: Best Time to Visit

Depending on the time of the year, temperatures range from moderate to very cold in Juneau. Average daytime temperatures reach a moderate 14°C (57°F) in July. In January, the coolest month of the year, temperatures drop to a very cold -2°C (28°F).

At night, temperatures range from around 8°C (46°F) in July to -7°C (19°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Juneau has a relatively rain/snowy climate with high precipitation levels, averaging 2887 mm (114 in) of rain/snowfall annually. Juneau can be quite wet during September, receiving approximately 368 mm (14 in) of precipitation over 19 rainy days.

In contrast, during the driest month (June), you will experience much drier conditions, with 140 mm (5.5 in) of precipitation spread across 15 rainy days days. For more details, please visit our Juneau Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Juneau can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 7.7 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.4 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The city experiences its highest humidity in September, reaching 87%. In April, the humidity drops to its lowest level at 76%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year

The mean wind speed varies between 3 m/s (6 knots) and 4 m/s (8 knots) throughout the year. It is lowest in July and August and highest during January, February, March, April, May, June, September, October, November and December. What does this mean?

The mean monthly wind speed over the year (meters per second)