Click on a day for an hourly weather forecast
The weather in Fairbanks in September is very cold with temperatures between 3°C and 11°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Fairbanks 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.
Please note that Fairbanks can expect a few days of snow in September.
Our weather forecast can give you a great sense of what weather to expect in Fairbanks in September 2025.
If you’re planning to visit Fairbanks in the near future, we highly recommend that you review the 14 day weather forecast for Fairbanks before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -17° / -23° | 4 | 15 | 12 | 16 mm | Awful | Fairbanks in January |
| February | -12° / -20° | 2 | 13 | 13 | 26 mm | Awful | Fairbanks in February |
| March | -7° / -17° | 4 | 11 | 16 | 26 mm | Awful | Fairbanks in March |
| April | 2° / -6° | 5 | 14 | 11 | 38 mm | Awful | Fairbanks in April |
| May | 14° / 5° | 3 | 26 | 2 | 34 mm | Ok | Fairbanks in May |
| June | 20° / 10° | 5 | 25 | 0 | 61 mm | Good | Fairbanks in June |
| July | 21° / 11° | 6 | 25 | 0 | 74 mm | Good | Fairbanks in July |
| August | 17° / 8° | 8 | 23 | 0 | 122 mm | Ok | Fairbanks in August |
| September | 11° / 3° | 5 | 22 | 2 | 71 mm | Bad | Fairbanks in September |
| October | 0° / -5° | 5 | 16 | 9 | 37 mm | Awful | Fairbanks in October |
| November | -12° / -17° | 3 | 11 | 16 | 41 mm | Awful | Fairbanks in November |
| December | -15° / -20° | 4 | 13 | 15 | 25 mm | Awful | Fairbanks in December |