Click on a day for an hourly weather forecast
The temperatures in Anchorage in September are quite cold with temperatures between 7°C and 12°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Anchorage during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Anchorage in September 2025.
If you’re planning to visit Anchorage in the near future, we highly recommend that you review the 14 day weather forecast for Anchorage before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -6° / -10° | 6 | 13 | 12 | 41 mm | Awful | Anchorage in January |
| February | -4° / -9° | 6 | 8 | 15 | 51 mm | Awful | Anchorage in February |
| March | -2° / -7° | 6 | 11 | 14 | 43 mm | Awful | Anchorage in March |
| April | 4° / -1° | 6 | 18 | 7 | 29 mm | Awful | Anchorage in April |
| May | 10° / 5° | 2 | 28 | 1 | 27 mm | Ok | Anchorage in May |
| June | 14° / 8° | 3 | 27 | 0 | 42 mm | Good | Anchorage in June |
| July | 16° / 11° | 5 | 26 | 0 | 66 mm | Good | Anchorage in July |
| August | 15° / 10° | 7 | 24 | 0 | 100 mm | Ok | Anchorage in August |
| September | 12° / 7° | 6 | 24 | 0 | 106 mm | Ok | Anchorage in September |
| October | 6° / 3° | 6 | 22 | 3 | 87 mm | Awful | Anchorage in October |
| November | -2° / -5° | 6 | 14 | 11 | 59 mm | Awful | Anchorage in November |
| December | -5° / -8° | 8 | 9 | 15 | 61 mm | Awful | Anchorage in December |