Click on a day for an hourly weather forecast
The temperatures in Billings in September are comfortable with low of 10°C and and high up to 24°C.
The wather in Billings in September can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.
Our weather forecast can give you a great sense of what weather to expect in Billings in September 2025.
If you’re planning to visit Billings in the near future, we highly recommend that you review the 14 day weather forecast for Billings before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 0° / -8° | 4 | 13 | 14 | 31 mm | Awful | Billings in January |
| February | 0° / -9° | 4 | 10 | 15 | 37 mm | Awful | Billings in February |
| March | 8° / -3° | 5 | 15 | 11 | 51 mm | Bad | Billings in March |
| April | 12° / 1° | 6 | 17 | 7 | 74 mm | Bad | Billings in April |
| May | 18° / 6° | 8 | 22 | 1 | 92 mm | Ok | Billings in May |
| June | 25° / 10° | 5 | 25 | 0 | 62 mm | Perfect | Billings in June |
| July | 31° / 15° | 2 | 29 | 0 | 29 mm | Good | Billings in July |
| August | 29° / 15° | 2 | 29 | 0 | 42 mm | Good | Billings in August |
| September | 24° / 10° | 2 | 28 | 0 | 34 mm | Perfect | Billings in September |
| October | 14° / 3° | 3 | 24 | 4 | 57 mm | Ok | Billings in October |
| November | 7° / -3° | 4 | 18 | 8 | 31 mm | Bad | Billings in November |
| December | 0° / -8° | 5 | 11 | 14 | 28 mm | Awful | Billings in December |