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July is the hottest month in Anchorage AK, with an average high of 66°F / 19°C; January is the coldest (23°F / -5°C). September is the wettest month, averaging 3.1 in / 79 mm of precipitation.
| Month | High °F / °C | Low °F / °C | Precip in / mm | Wet days |
|---|---|---|---|---|
| Jan | 23 / -5 | 11 / -12 | 0.7 / 19 | 5 |
| Feb | 28 / -2 | 15 / -9 | 0.9 / 22 | 5 |
| Mar | 33 / 1 | 19 / -7 | 0.7 / 18 | 4 |
| Apr | 46 / 8 | 30 / -1 | 0.4 / 11 | 3 |
| May | 56 / 14 | 40 / 4 | 0.7 / 17 | 4 |
| Jun | 64 / 18 | 48 / 9 | 1.0 / 26 | 5 |
| Jul | 66 / 19 | 53 / 12 | 1.8 / 46 | 8 |
| Aug | 64 / 18 | 51 / 11 | 2.9 / 74 | 11 |
| Sep | 56 / 13 | 43 / 6 | 3.1 / 79 | 11 |
| Oct | 42 / 6 | 31 / -1 | 1.8 / 46 | 8 |
| Nov | 29 / -2 | 18 / -8 | 1.2 / 30 | 7 |
| Dec | 25 / -4 | 14 / -10 | 1.1 / 29 | 7 |
Extremes since 1952: highest 90°F / 32°C (July 4, 2019), lowest -34°F / -37°C (January 5, 1975).
Daylight lasts about 18.9 hours in June and 5.1 hours in December.
Data: Meteostat — Anchorage Ted Stevens Airport, 1991–2020 averages.
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