Anchorage, AK Weather
Anchorage hourly forecast: next 24 hours
Today's high of 55°F (13°C) is right in line with the typical September high of 55°F (13°C).
Current conditions in detail
Anchorage weather tomorrow (Wednesday, September 16)
Tomorrow in Anchorage looks sunny, with a high of 55° and an overnight low of 50°. Precipitation chance is modest at 36%. Winds top out near 24 mph, and the UV index reaches 2 (low).
Anchorage 14-day forecast
About the weather in Anchorage
A 24°C spread between its warmest and coolest months puts Anchorage among the more strongly seasonal places we cover. July averages 67°F (20°C) by day; January averages 21°F (-6°C), with nights at 12°F (-11°C).
Anchorage weather: quick facts
- Hottest month: July - highs near 67°F (20°C)
- Coldest month: January - highs near 21°F (-6°C)
- Decade extremes (2015-2024): 90°F (32°C) high · -20°F (-29°C) low
- Wettest month: September (17 rainy days) · Sunniest: June (12.6 h sun/day)
- Climate type: subarctic
- Annual swing: 24°C between the average warmest and coolest month · day to night: 7°C
- Snow: about 50 days a year
- Months with freezing average lows: 6
- Average humidity: 77%
Temperatures through the year
At its warmest, in July, Anchorage runs to 67°F (20°C) in the afternoon and back to 54°F (12°C) by dawn. January is the coolest month, with highs of 21°F (-6°C) and lows near 12°F (-11°C). Between the average July and the average January lie 24°C, a wider spread than roughly 80% of the cities we track.
Rain, sun and snow
June is the brightest month at 12.6 hours of sun a day, against an annual average of 7.1 - duller than almost anywhere else we cover. Snow falls on roughly 50 days a year, mostly September through April. Overnight lows average at or below freezing for 6 months, November through April. Precipitation concentrates in September - 5.0 inches (128 mm) on 17 days - and thins out by April. The gridded 2015-2024 daily record for this location tops out at 90°F (32°C) and bottoms at -20°F (-29°C) - decade extremes, not all-time station records.
Season by season
Spring (March through May)
Through spring, Anchorage is chilly: 45°F (7°C) by day, 29°F (-2°C) after dark, and expect showers on roughly 30 days across the season, plus about 10 snowy days.
Summer (June through August)
Through summer, Anchorage stays on the cool side of mild: 66°F (19°C) by day, 52°F (11°C) after dark, and rain falls on around 38 of the 90 days. Daylight is generous - around 10.7 hours of sun a day.
Fall (September through November)
Through fall, Anchorage is brisk and cold: 42°F (6°C) by day, 32°F (0°C) after dark, and rain falls on around 43 of the 90 days, plus about 11 snowy days.
Winter (December through February)
Winter runs to hard cold here - highs near 23°F (-5°C), nights near 14°F (-10°C), and rain falls on around 37 of the 90 days, plus about 28 snowy days. Sun is scarce, averaging 2.9 hours a day. Wind sharpens cold like this considerably; pair the forecast winds with the wind speed converter to judge exposed conditions.
Average temperatures in Anchorage by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 21° | 12° | 11 | 2.1 in | 2.8 h/day | 83% |
| February | 25° | 15° | 12 | 2.4 in | 4.5 h/day | 81% |
| March | 33° | 19° | 9 | 1.6 in | 7.5 h/day | 75% |
| April | 45° | 28° | 8 | 1.3 in | 10.0 h/day | 72% |
| May | 56° | 40° | 12 | 1.8 in | 11.3 h/day | 69% |
| June | 65° | 50° | 10 | 1.8 in | 12.6 h/day | 67% |
| July | 67° | 54° | 12 | 3.8 in | 10.8 h/day | 74% |
| August | 64° | 52° | 16 | 4.7 in | 8.8 h/day | 78% |
| September | 55° | 44° | 17 | 5.0 in | 6.8 h/day | 82% |
| October | 43° | 33° | 14 | 3.7 in | 5.0 h/day | 81% |
| November | 28° | 19° | 12 | 3.0 in | 3.3 h/day | 81% |
| December | 24° | 14° | 14 | 2.9 in | 1.5 h/day | 84% |