Teton County (Jackson)
September
Weather in Teton County, Wyoming for September 2025
Your guide to Teton County weather in September - trends and predictions
In general, the average temperature in Teton County at the beginning of September is 23.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.7 °F by the end of September.
Teton County experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 51.5 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
24
Dry days
6
Rainy days
0
Snow days
19°/6°
Temperatures
15 km/h
Avg max wind
46 %
Avg humidity
Teton County Weather September
Move between months or click on a day
Temperatures trend during September in Teton County
See the weather trend as well as the moving average line
September weather in Teton County day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 27° /8° | 0 mm | 7 | |
| Sept. 2 |  Overcast | 26° /9° | 0 mm | 6 | |
| Sept. 3 |  Patchy rain possible | 21° /9° | 0.6 mm | 5 | |
| Sept. 4 |  Moderate rain at times | 18° /6° | 0.6 mm | 4 | |
| Sept. 5 | Sunny | 22° /5° | 0 mm | 6 | |
| Sept. 6 | Sunny | 24° /7° | 0 mm | 6 | |
| Sept. 7 | Sunny | 24° /8° | 0 mm | 6 | |
| Sept. 8 |  Cloudy | 24° /8° | 0 mm | 5 | |
| Sept. 9 | Sunny | 23° /8° | 0 mm | 6 | |
| Sept. 10 | Patchy rain possible | 23° /8° | 0.2 mm | 5 | |
| Sept. 11 | Patchy rain possible | 20° /9° | 1.3 mm | 5 | |
| Sept. 12 | Moderate or heavy rain shower | 7° /3° | 14 mm | 2 | |
| Sept. 13 | Cloudy | 14° /2° | 0.2 mm | 3 | |
| Sept. 14 |  Partly cloudy | 19° /3° | 0 mm | 5 | |
| Sept. 15 | Overcast | 19° /5° | 0.2 mm | 4 | |
| Sept. 16 | Overcast | 20° /7° | 0 mm | 5 | |
| Sept. 17 | Moderate or heavy rain shower | 9° /2° | 19.7 mm | 2 | |
| Sept. 18 | Moderate or heavy rain shower | 6° /3° | 14.8 mm | 2 | |
| Sept. 19 | Partly cloudy | 15° /4° | 0 mm | 5 | |
| Sept. 20 | Sunny | 16° /5° | 0 mm | 5 | |
| Sept. 21 | Sunny | 18° /3° | 0 mm | 5 | |
| Sept. 22 | Sunny | 16° /4° | 0 mm | 5 | |
| Sept. 23 | Partly cloudy | 15° /5° | 0 mm | 5 | |
| Sept. 24 | Sunny | 19° /5° | 0 mm | 5 | |
| Sept. 25 | Sunny | 21° /7° | 0 mm | 6 | |
| Sept. 26 | Sunny | 20° /9° | 0 mm | 6 | |
| Sept. 27 | Sunny | 21° /7° | 0 mm | 6 | |
| Sept. 28 | Sunny | 23° /8° | 0 mm | 6 | |
| Sept. 29 | Sunny | 22° /10° | 0 mm | 6 | |
| Sept. 30 | Sunny | 12° /5° | 0 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Teton County in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Teton County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Teton County in September - FAQ
What are the expected maximum and minimum temperatures in Teton County during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 6°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Teton County during September?
Moderate rainfall is anticipated in Teton County during September, with a total of 51.5 mm spread over approximately 6 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Teton County during September?
The average wind speed in Teton County during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Teton County
Explore the daily rainfall trends and prepare for Teton Countys September weather 💧
UV exposure in Teton County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Teton County
Select a location for an accurate weather forecast
More Locations Quick links
More Teton County weather pages
You are here
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.
Found a mistake?
We appreciate your attention to details. Tell us here.