Anchorage climate — normals and trends
Anchorage (United States) has a dry-summer subarctic climate (Dsc) under the Köppen-Geiger classification. Its mean annual temperature is 2.2 °C and it receives 788 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (14.1 °C on average) and the coldest is January (-8.8 °C). Rainfall peaks in September.
Anchorage averages 177 frost days, 0 hot days (≥ 30 °C) and 139 rainy days per year.
Anchorage has warmed by +2.6 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.
The number of frost days there went from about 194 to 160 per year over the period.
The hottest day of the period reached 27.0 °C (on 15 June 1969) and the coldest -34.4 °C (on 28 January 1989).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
AnchorageAlaska
- coords
- 61.22°, -149.90°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
2.2°C
Average daily high
4.7°C
Average daily low
-0.2°C
Annual rainfall
788mm
Sunshine / day
7.8h
Mean relative humidity
77%
Average peak wind
11.5km/h
Seasonal range
22.9°C
Frost days (< 0 °C)
177 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
139 d/yr
Annual snowfall
184.1 cm
Average feels-like high
1.9 °C
Average feels-like low
-3.5 °C
Average peak gust
22.9 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.41 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
27.0 °C
15 June 1969
Coldest day
-34.4 °C
28 January 1989
Wettest day
65 mm
20 September 1995
Windiest day
46.7 km/h
1 January 2022
Strongest gust
96.8 km/h
25 September 1996
Hottest feels-like
27.9 °C
4 July 2019
Coldest feels-like
-40.5 °C
28 January 1989
Snowiest day
35.1 cm
23 October 1954
Sunniest day
18.1 h
10 June 1999
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -0.8 °C | +6.1 °C | 195 mm | +140 mm |
| Feb | -0.7 °C | +3.5 °C | 7 mm | -42 mm |
| Mar | 4.3 °C | +4.9 °C | 29 mm | -11 mm |
| Apr | 6.6 °C | +2.0 °C | 86 mm | +51 mm |
| May | 11.0 °C | +1.4 °C | 43 mm | +11 mm |
| Jun | 14.6 °C | +0.3 °C | 66 mm | +20 mm |
| Jul | 17.6 °C | +1.0 °C | 44 mm | -34 mm |
| Aug | 17.0 °C | +1.1 °C | 91 mm | -15 mm |
| Sep | 12.8 °C | +0.9 °C | 178 mm | +62 mm |
| Oct | 7.4 °C | +2.9 °C | 119 mm | +21 mm |
| Nov | -1.5 °C | +1.3 °C | 58 mm | -9 mm |
| Dec | -9.2 °C | -3.0 °C | 15 mm | -51 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Anchorage?
Anchorage has a dry-summer subarctic climate (Köppen Dsc). Over 1940-2025, the average annual temperature is 2.2 °C and it receives 788 mm of precipitation per year.
What is the hottest day ever recorded in Anchorage?
The hottest day measured in Anchorage between 1940 and 2025 was 15 June 1969, reaching 27.0 °C.
What is the coldest day in Anchorage?
The coldest day measured in Anchorage between 1940 and 2025 was 28 January 1989, at -34.4 °C.
Does it snow in Anchorage?
Yes. Anchorage gets on average 184.1 cm of snow per year and has around 177 frost days.
Has the climate of Anchorage warmed?
Yes: Anchorage warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Anchorage?
The wettest day measured in Anchorage between 1940 and 2025 was 20 September 1995, with 65 mm of rain in 24 hours.
What was the windiest day in Anchorage?
The windiest day measured in Anchorage between 1940 and 2025 was 1 January 2022, with winds reaching 46.7 km/h.
What is the warmest month in Anchorage?
The warmest month in Anchorage is July (14.1 °C on average); the coldest is January (-8.8 °C).
How much does it rain in Anchorage?
Anchorage receives on average 788 mm of precipitation per year, spread over about 139 rainy days.
Is it sunny in Anchorage?
Anchorage gets on average 7.8 hours of sunshine per day, roughly 2,847 hours per year over 1940-2025.
What is the biggest single-day snowfall in Anchorage?
The heaviest 24-hour snowfall measured in Anchorage between 1940 and 2025 was 23 October 1954, with 35.1 cm.
Are there tropical nights in Anchorage?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Anchorage.
What was the most extreme apparent temperature in Anchorage?
In Anchorage, between 1940 and 2025, the highest apparent temperature reached 27.9 °C on 4 July 2019, and the lowest was -40.5 °C on 28 January 1989.
Compare Anchorage with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Anchorage