Weather in Teton County, Wyoming for September 2026
Until now, September 2026 in Teton County has been nearly identical to the historical average, with a temperature of 19.1 °F (showing only a slight deviation of 0.2 °F).
The forecast for the next days in Teton County predicts temperatures to be around 19 °F, close to the historical average.
In general, the average temperature in Teton County at the beginning of September is 22.3 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.6 °F by the end of September.
Teton County experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 72.5 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
Teton County Weather September
Temperatures trend during September in Teton County
September weather in Teton County day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 24° /8° | 1.4 mm | 5 | |
| Sept. 2 |  Overcast | 24° /9° | 0.1 mm | 5 | |
| Sept. 3 | Sunny | 22° /8° | 0.2 mm | 7 | |
| Sept. 4 | Sunny | 21° /8° | 0.2 mm | 6 | |
| Sept. 5 | Sunny | 22° /6° | 0 mm | 7 | |
| Sept. 6 | Sunny | 23° /6° | 0.1 mm | 7 | |
| Sept. 7 | Sunny | 20° /7° | 4.8 mm | 6 | |
| Sept. 8 |  Cloudy | 21° /5° | 0 mm | 6 | |
| Sept. 9 | Sunny | 21° /7° | 0 mm | 6 | |
| Sept. 10 |  Patchy rain possible | 22° /6° | 0.1 mm | 6 | |
| Sept. 11 | Patchy rain possible | 19° /8° | 2.4 mm | 4 | |
| Sept. 12 |  Moderate or heavy rain shower | 16° /5° | 4.7 mm | 4 | |
| Sept. 13 | Cloudy | 16° /4° | 13.9 mm | 4 | |
| Sept. 14 |  Partly cloudy | 17° /3° | 0.4 mm | 5 | |
| Sept. 15 | Overcast | 16° /3° | 0.1 mm | 5 | |
| Sept. 16 | Overcast | 19° /5° | 0.2 mm | 4 | |
| Sept. 17 | Moderate or heavy rain shower | 13° /3° | 8.8 mm | 3 | |
| Sept. 18 | Moderate or heavy rain shower | 14° /4° | 6.7 mm | 3 | |
| Sept. 19 | Partly cloudy | 16° /5° | 0.4 mm | 3 | |
| Sept. 20 | Sunny | 16° /6° | 0 mm | 5 | |
| Sept. 21 | Sunny | 16° /4° | 5.3 mm | 5 | |
| Sept. 22 | Sunny | 15° /4° | 8.4 mm | 3 | |
| Sept. 23 | Sunny | 18° /4° | 0.4 mm | 5.8 | |
| Sept. 24 | Sunny | 21° /4° | 0 mm | 6.2 | |
| Sept. 25 | Overcast | 22° /6° | 0 mm | 5.7 | |
| Sept. 26 | Sunny | 18° /5° | 0 mm | 5.7 | |
| Sept. 27 | Overcast | 22° /6° | 0.6 mm | 5 | |
| Sept. 28 | Patchy rain possible | 14° /5° | 0.7 mm | 3 | |
| Sept. 29 | Sunny | 14° /1° | 0 mm | 4 | |
| Sept. 30 | Sunny | 19° /1° | 0 mm | 5 | |
| Next | |||||
Teton County in September - FAQ
What are the expected maximum and minimum temperatures in Teton County during September?
How much rainfall should be expected in Teton County during September?
What are the typical wind conditions in Teton County during September?
September rainfall patterns in Teton County
UV exposure in Teton County during September
Quick links
Where is Teton County?Get accurate weather forecasts for Teton County, located at latitude 43.48 and longitude -110.762. Stay updated with localized weather information tailored for Teton County.