Weather in Billings, Montana for September 2026
Red Flag Warning - See hour by hour.
Until now, September 2026 in Billings has been nearly identical to the historical average, with a temperature of 30.8 °F (showing only a slight deviation of 0.3 °F).
The forecast for the next days in Billings predicts a temperature of 23.1 °F, which is cooler than the historical average.
In general, the average temperature in Billings at the beginning of September is 30.4 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 27.9 °F by the end of September.
Billings experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 90.7 mm.
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Billings Weather September
Temperatures trend during September in Billings
September weather in Billings day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 32° /12° | 0.2 mm | 6 | |
| Sept. 2 | Sunny | 35° /15° | 0 mm | 8 | |
| Sept. 3 |  Overcast | 30° /15° | 0.1 mm | 6 | |
| Sept. 4 |  Cloudy | 29° /13° | 0 mm | 6 | |
| Sept. 5 | Sunny | 27° /10° | 0 mm | 7 | |
| Sept. 6 | Sunny | 30° /10° | 0.1 mm | 7 | |
| Sept. 7 | Sunny | 30° /12° | 0 mm | 7 | |
| Sept. 8 | Sunny | 31° /13° | 0.2 mm | 8 | |
| Sept. 9 |  Partly cloudy | 30° /13° | 0 mm | 8 | |
| Sept. 10 | Sunny | 33° /11° | 0 mm | 6.4 | |
| Sept. 11 | Sunny | 21° /12° | 0.1 mm | 5.3 | |
| Sept. 12 | Overcast | 16° /11° | 0.1 mm | 3.6 | |
| Sept. 13 |  Light rain shower | 16° /5° | 24.6 mm | 4.7 | |
| Sept. 14 | Sunny | 19° /5° | 0 mm | 5 | |
| Sept. 15 | Sunny | 23° /10° | 0 mm | 6 | |
| Sept. 16 | Overcast | 18° /8° | 0 mm | 5 | |
| Sept. 17 | Sunny | 20° /6° | 0 mm | 6 | |
| Sept. 18 | Overcast | 26° /11° | 0 mm | 6 | |
| Sept. 19 | Overcast | 31° /13° | 1.8 mm | 7 | |
| Sept. 20 | Overcast | 24° /16° | 0 mm | 6 | |
| Sept. 21 | Sunny | 23° /12° | 0 mm | 6 | |
| Sept. 22 | Sunny | 26° /12° | 0 mm | 7 | |
| Sept. 23 | Sunny | 28° /14° | 0 mm | 7 | |
| Sept. 24 | Sunny | 27° /8° | 0 mm | 7 | |
| Sept. 25 | Sunny | 31° /11° | 0 mm | 8 | |
| Sept. 26 | Sunny | 27° /13° | 0 mm | 7 | |
| Sept. 27 | Sunny | 28° /7° | 0 mm | 7 | |
| Sept. 28 | Sunny | 29° /9° | 0 mm | 7 | |
| Sept. 29 | Sunny | 31° /11° | 0 mm | 8 | |
| Sept. 30 | Sunny | 22° /8° | 0 mm | 6 | |
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Billings in September - FAQ
What are the expected maximum and minimum temperatures in Billings during September?
How much rainfall should be expected in Billings during September?
What are the typical wind conditions in Billings during September?
September rainfall patterns in Billings
UV exposure in Billings during September
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Where is Billings?Get accurate weather forecasts for Billings, located at latitude 45.783 and longitude -108.501. Stay updated with localized weather information tailored for Billings.