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Anchorage Weather by Month
Average temperatures, rainfall and humidity for Anchorage, United States, month by month, built from OpenWeather's historical records. Use it to see what a typical Anchorage month looks like before you travel — then check the live Anchorage forecast for the days ahead.
Warmest month
July
19°C average high
Coolest month
January
-10°C average low
Wettest month
September
187 mm of rain
Driest month
February
13 mm of rain
Average temperature and rainfall in Anchorage by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | -4°C | -10°C | -29°C / 9°C | 24 mm | 82% | 10 km/h |
| February | -3°C | -9°C | -29°C / 8°C | 13 mm | 79% | 9 km/h |
| March | 1°C | -7°C | -26°C / 10°C | 18 mm | 70% | 10 km/h |
| April | 7°C | -1°C | -17°C / 16°C | 43 mm | 64% | 10 km/h |
| May | 13°C | 5°C | -4°C / 24°C | 97 mm | 63% | 12 km/h |
| June | 18°C | 10°C | 4°C / 27°C | 62 mm | 67% | 11 km/h |
| July | 19°C | 12°C | 7°C / 30°C | 93 mm | 74% | 11 km/h |
| August | 18°C | 11°C | 4°C / 25°C | 127 mm | 77% | 10 km/h |
| September | 13°C | 7°C | -4°C / 21°C | 187 mm | 80% | 9 km/h |
| October | 6°C | 1°C | -13°C / 15°C | 148 mm | 81% | 10 km/h |
| November | -2°C | -7°C | -24°C / 9°C | 24 mm | 83% | 10 km/h |
| December | -5°C | -10°C | -24°C / 10°C | 15 mm | 83% | 10 km/h |
Best time to visit Anchorage
The most comfortable time to visit Anchorage is generally June to August, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around September, totalling about 853 mm a year.
Travellers who prefer heat should aim for July, when highs average 19°C. September is the month to avoid if rain would spoil your plans — it averages 187 mm, roughly 14× the rainfall of February.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Anchorage forecast for what is happening now.