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Anchorage, AK Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Anchorage, AK?
Anchorage, AK gets 14.2 in of precipitation a year over about 108 rainy days. July is the warmest month (average high 68°F) and January the coldest (average low 9°F).
Continental climate
Anchorage, AK has mild summers and cold winters. Daytime highs range from about 23°F in January to 68°F in July. September is usually the wettest month. The most comfortable time to visit is typically June to August, when daytime highs sit near 66°F.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 11° | 25° |
| Spring | Mar–May | 29° | 47° |
| Summer | Jun–Aug | 52° | 66° |
| Autumn | Sep–Nov | 30° | 43° |
How much rain does Anchorage get?
Anchorage gets 14.2 in of precipitation in an average year, spread over about 108 days with measurable rain. That is more rainy days than 68% of the US.
September is the wettest month, with 3.0 in. April is the driest, with 0.3 in. August has the most rainy days, about 16.
The longest dry spell in the last five years lasted 202 days, to April 16, 2025.
From September 2025 to August 2026 Anchorage got 17.1 in of rain, against a normal of 14.2 in for those months. July 2026 had the most, with 4.7 in.
See where Anchorage ranks: rainiest cities in the US, US cities with the most rainy days.
Anchorage weather by month
Anchorage weather in January
In January, Anchorage averages a high of 23°F and a low of 9°F. It gets 0.5 in of precipitation over about 6 rainy days. Estimated sunshine is 28% of daylight hours, derived from ERA5 cloud cover. The January record high is 53°F (2009) and the record low is -24°F (2009).
Anchorage weather in February
In February, Anchorage averages a high of 28°F and a low of 13°F. It gets 0.7 in of precipitation over about 6 rainy days. Estimated sunshine is 24% of daylight hours, derived from ERA5 cloud cover. The February record high is 50°F (2024) and the record low is -26°F (1999).
Anchorage weather in March
In March, Anchorage averages a high of 35°F and a low of 17°F. It gets 0.5 in of precipitation over about 6 rainy days. Estimated sunshine is 33% of daylight hours, derived from ERA5 cloud cover. The March record high is 54°F (2016) and the record low is -19°F (2026).
Anchorage weather in April
In April, Anchorage averages a high of 47°F and a low of 30°F. It gets 0.3 in of precipitation over about 5 rainy days. Estimated sunshine is 39% of daylight hours, derived from ERA5 cloud cover. The April record high is 71°F (2005) and the record low is -1°F (2004).
Anchorage weather in May
In May, Anchorage averages a high of 58°F and a low of 41°F. It gets 0.6 in of precipitation over about 7 rainy days. Estimated sunshine is 30% of daylight hours, derived from ERA5 cloud cover. The May record high is 78°F (2002) and the record low is 26°F (2012).
Anchorage weather in June
In June, Anchorage averages a high of 65°F and a low of 50°F. It gets 1.0 in of precipitation over about 10 rainy days. Estimated sunshine is 32% of daylight hours, derived from ERA5 cloud cover. The June record high is 87°F (2013) and the record low is 38°F (2006). June is one of the most comfortable months to visit.
Anchorage weather in July
In July, Anchorage averages a high of 68°F and a low of 54°F. It gets 1.7 in of precipitation over about 12 rainy days. Estimated sunshine is 26% of daylight hours, derived from ERA5 cloud cover. The July record high is 90°F (2019) and the record low is 38°F (2020). July is one of the most comfortable months to visit.
Anchorage weather in August
In August, Anchorage averages a high of 66°F and a low of 51°F. It gets 2.5 in of precipitation over about 16 rainy days. Estimated sunshine is 28% of daylight hours, derived from ERA5 cloud cover. The August record high is 83°F (2003) and the record low is 35°F (1998). August is one of the most comfortable months to visit.
Anchorage weather in September
In September, Anchorage averages a high of 57°F and a low of 43°F. It gets 3.0 in of precipitation over about 15 rainy days. Estimated sunshine is 25% of daylight hours, derived from ERA5 cloud cover. The September record high is 71°F (2016) and the record low is 23°F (2021).
Anchorage weather in October
In October, Anchorage averages a high of 43°F and a low of 31°F. It gets 1.6 in of precipitation over about 11 rainy days. Estimated sunshine is 29% of daylight hours, derived from ERA5 cloud cover. The October record high is 67°F (2006) and the record low is 4°F (2001).
Anchorage weather in November
In November, Anchorage averages a high of 29°F and a low of 17°F. It gets 0.9 in of precipitation over about 7 rainy days. Estimated sunshine is 32% of daylight hours, derived from ERA5 cloud cover. The November record high is 55°F (2002) and the record low is -15°F (2006).
Anchorage weather in December
In December, Anchorage averages a high of 25°F and a low of 11°F. It gets 0.9 in of precipitation over about 8 rainy days. Estimated sunshine is 22% of daylight hours, derived from ERA5 cloud cover. The December record high is 54°F (2011) and the record low is -17°F (2001).
Sunshine, humidity and wind in Anchorage
April is the sunniest month in Anchorage, with estimated sunshine of 39% of daylight hours from ERA5 cloud cover. December is the cloudiest, at 22%. The annual cloud-cover estimate is 29% of daylight hours; it is not a measurement of sunshine duration. Anchorage is cloudier than 99% of the US.
Humidity peaks in January at 80% and is lowest in April at 69%.
Wind averages 4 mph over the year, and May is the windiest month at 5 mph.
See where Anchorage ranks: sunniest cities in the US, cloudiest cities in the US, hottest cities in the US.
First and last freeze in Anchorage
The first fall freeze in Anchorage typically comes around September 26, and the last spring freeze around May 1. That leaves a frost-free growing season of about 148 days.
Anchorage weather records
These records cover ANCHORAGE MERRILL FLD during 1997–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Anchorage station is 90°F, on July 4, 2019. The coldest is -26°F, on February 4, 1999.
The wettest day in the available station history brought 2.0 in of precipitation, on July 13, 2024.
43 all-time records have been set at the station since 1997.
The best time to visit Anchorage
The most comfortable time to visit is typically June to August, when daytime highs sit near 66°F.
Winter (December–February) is cold, with average highs around 25°F and lows near 11°F.
Spring (March–May) is chilly, with average highs around 47°F and lows near 29°F.
Summer (June–August) is mild, with average highs around 66°F and lows near 52°F. It can feel humid.
Autumn (September–November) is chilly, with average highs around 43°F and lows near 30°F.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Wind | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|---|
| January | 9° | 23° | 0.46 in | 6 | 3 mph | 80% | 28% | 53° | -24° |
| February | 13° | 28° | 0.71 in | 6 | 3 mph | 78% | 24% | 50° | -26° |
| March | 17° | 35° | 0.54 in | 6 | 4 mph | 72% | 33% | 54° | -19° |
| April | 30° | 47° | 0.30 in | 5 | 4 mph | 69% | 39% | 71° | -1° |
| May | 41° | 58° | 0.62 in | 7 | 5 mph | 70% | 30% | 78° | 26° |
| June | 50° | 65° | 0.99 in | 10 | 5 mph | 72% | 32% | 87° | 38° |
| July | 54° | 68° | 1.7 in | 12 | 5 mph | 77% | 26% | 90° | 38° |
| August | 51° | 66° | 2.5 in | 16 | 4 mph | 80% | 28% | 83° | 35° |
| September | 43° | 57° | 3.0 in | 15 | 4 mph | 78% | 25% | 71° | 23° |
| October | 31° | 43° | 1.6 in | 11 | 3 mph | 75% | 29% | 67° | 4° |
| November | 17° | 29° | 0.88 in | 7 | 3 mph | 78% | 32% | 55° | -15° |
| December | 11° | 25° | 0.89 in | 8 | 3 mph | 80% | 22% | 54° | -17° |
Station: ANCHORAGE MERRILL FLD, 2 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1997–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Anchorage climate questions
How much rain does Anchorage get?
Anchorage gets 14.2 in of precipitation in an average year, over about 108 rainy days.
What is the wettest month in Anchorage?
September is the wettest month in Anchorage, with 3.0 in. April is the driest, with 0.3 in.
How many rainy days does Anchorage have a year?
Anchorage has about 108 days with measurable rain in an average year. August has the most, about 16.
What is the hottest month in Anchorage?
July is the warmest month in Anchorage, with an average high of 68°F.
What is the coldest month in Anchorage?
January is the coldest month in Anchorage, with an average low of 9°F.
What is the record high temperature in Anchorage?
Within the available 1997–2026 station history, the record high at the Anchorage station is 90°F, set on July 4, 2019. The record low is -26°F, on February 4, 1999.
What is the sunniest month in Anchorage?
April is the sunniest month in Anchorage, with estimated sunshine of 39% of daylight hours from ERA5 cloud cover. December is the cloudiest.
When is the first frost in Anchorage?
The first fall freeze in Anchorage typically comes around September 26. The last spring freeze is around May 1.
What is the best time to visit Anchorage?
The most comfortable time to visit is typically June to August, when daytime highs sit near 66°F.