Juneau, AK Weather
Juneau hourly forecast: next 24 hours
Today's high of 58°F (14°C) is about 5°F (3°C) below the typical August high of 63°F (17°C).
Current conditions in detail
Juneau weather tomorrow (Monday, August 17)
Tomorrow in Juneau looks sunny, with a high of 34° and an overnight low of 28°. There is a 40% chance of rain - plan accordingly. Winds top out near 24 mph, and the UV index reaches 1 (low).
Juneau 14-day forecast
About the weather in Juneau
Located in Alaska, United States, Juneau experiences a oceanic climate with mild temperatures year-round with regular rainfall. Afternoon temperatures peak near 64°F (18°C) in July and dip to about 31°F (0°C) in February, with around 128.7 inches (3268 mm) of precipitation falling across the year.
Juneau weather: quick facts
- Hottest month: July - highs near 64°F (18°C)
- Coldest month: February - highs near 31°F (0°C)
- Record high: 84°F (29°C) · Record low: -9°F (-23°C) (2015–2024)
- Wettest month: September (21 rainy days) · Sunniest: May (9.4 h sun/day)
- Climate type: oceanic - mild temperatures year-round with regular rainfall
- Snow: about 98 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 64°F (18°C) and overnight lows stay near 54°F (12°C). The coolest month is February, with typical highs of 31°F (0°C) and lows around 24°F (-5°C). Based on 2015–2024 weather data, temperatures have reached as high as 84°F (29°C) and dropped as low as -9°F (-23°C).
Rain, sun and snow
September is usually the wettest month. It brings about 15.5 inches (393 mm) of rain over 21 days, while June is the driest. May brings the most sunshine, averaging 9.4 hours of sun a day. Snow falls on about 98 days in a typical year, mostly from October through May.
Season by season
Spring (March through May)
Spring in Juneau is chilly, with daytime highs averaging 44°F (7°C) and nights around 34°F (1°C); expect showers on roughly 52 days across the season, plus around 27 snowy days.
Summer (June through August)
Summer in Juneau is mild, with daytime highs averaging 63°F (17°C) and nights around 52°F (11°C); expect showers on roughly 57 days across the season.
Fall (September through November)
Fall in Juneau is chilly, with daytime highs averaging 46°F (8°C) and nights around 38°F (3°C); expect showers on roughly 64 days across the season, plus around 21 snowy days.
Winter (December through February)
Winter in Juneau is frigid, with daytime highs averaging 32°F (0°C) and nights around 25°F (-4°C); expect showers on roughly 59 days across the season, plus around 50 snowy days. Wind makes those temperatures feel harsher than they sound - pair the forecast winds with the wind speed converter to judge conditions on exposed skin.
Average temperatures in Juneau by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 32° | 25° | 20 | 12.7 in | 2.2 h/day | 77% |
| February | 31° | 24° | 17 | 8.4 in | 4.2 h/day | 74% |
| March | 36° | 28° | 18 | 7.4 in | 6.0 h/day | 74% |
| April | 43° | 33° | 18 | 7.6 in | 7.4 h/day | 78% |
| May | 54° | 41° | 16 | 7.4 in | 9.4 h/day | 79% |
| June | 61° | 50° | 19 | 6.6 in | 9.4 h/day | 82% |
| July | 64° | 54° | 18 | 9.9 in | 8.5 h/day | 86% |
| August | 63° | 53° | 19 | 13.8 in | 7.8 h/day | 87% |
| September | 56° | 47° | 21 | 15.5 in | 5.8 h/day | 86% |
| October | 46° | 38° | 21 | 14.9 in | 4.0 h/day | 84% |
| November | 36° | 29° | 22 | 11.9 in | 2.3 h/day | 79% |
| December | 32° | 25° | 22 | 12.6 in | 1.6 h/day | 79% |