Weather and climate in Anchorage, AK
What the weather is like in Anchorage
The warmest month in Anchorage is July, with average highs of 58°F. The coolest is January, when nights average 10°F. About 46.9 in of rain and snow falls in a typical year, most in September and least in April.
Skies are clearest in March (63% average cloud cover) and cloudiest in July (83%). Combining cloud with the length of truly dark nights, April, January, December offer the most clear, dark hours for stargazing.
Clear, dark hours per night
Hours of full astronomical darkness in mid-month, multiplied by the average share of clear sky. A rough guide to how much good observing time a typical night offers.
Monthly averages
| Month | High | Low | Precipitation | Cloud cover | Humidity | Wind | Dark hours |
|---|---|---|---|---|---|---|---|
| January | 19°F | 10°F | 3.2 in | 65% | 92% | 5 mph | 12.1 h |
| February | 23°F | 12°F | 3.0 in | 69% | 91% | 5 mph | 10.0 h |
| March | 25°F | 12°F | 2.5 in | 63% | 88% | 5 mph | 7.2 h |
| April | 33°F | 24°F | 2.5 in | 72% | 87% | 5 mph | 25.8 h |
| May | 44°F | 34°F | 2.7 in | 79% | 84% | 5 mph | 0.0 h |
| June | 54°F | 42°F | 3.3 in | 81% | 83% | 4 mph | 0.0 h |
| July | 58°F | 47°F | 4.4 in | 83% | 84% | 4 mph | 0.0 h |
| August | 56°F | 46°F | 5.9 in | 79% | 85% | 4 mph | 0.0 h |
| September | 47°F | 38°F | 6.3 in | 78% | 87% | 5 mph | 5.8 h |
| October | 35°F | 28°F | 5.0 in | 77% | 91% | 5 mph | 9.2 h |
| November | 23°F | 14°F | 4.1 in | 70% | 93% | 5 mph | 11.6 h |
| December | 21°F | 13°F | 3.9 in | 72% | 94% | 5 mph | 12.7 h |
Climate nearby
Climate averages: NASA POWER, 2001–2025, for the grid area around 61.00, -149.38 (about 50 km across). High and low temperatures are estimated from the monthly mean and the average daily range. Hills, coasts and cities can differ from the area average. Aurora outlook for Anchorage · Sources and methods.