Teton County (Jackson)
September
Weather in Teton County, Wyoming for September 2027
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 22.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.3 °C by the end of September.
With an average of 5 rainy days, Teton County experiences minimal rainfall in September.
Is September a good time to visit Teton County? check out the best time to travel to Teton County page.
✨ Is September a good time to visit Teton County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
25
Dry days
5
Rainy days
0
Snow days
18°/6°
Temperatures
16 km/h
Avg max wind
49 %
Avg humidity
Teton County Weather September
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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
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 24° /9° | 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° /7° | 0.1 mm | 7 | |
| Sept. 7 |  Light rain | 20° /7° | 4.8 mm | 6 | |
| Sept. 8 |  Cloudy | 21° /6° | 0 mm | 6 | |
| Sept. 9 | Sunny | 21° /7° | 0 mm | 6 | |
| Sept. 10 | Patchy rain possible | 21° /7° | 0.1 mm | 6 | |
| Sept. 11 | Patchy rain possible | 19° /8° | 2.4 mm | 4 | |
| Sept. 12 | Light rain | 16° /5° | 4.7 mm | 4 | |
| Sept. 13 |  Moderate rain | 16° /5° | 13.9 mm | 4 | |
| Sept. 14 |  Partly cloudy | 16° /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° /4° | 8.8 mm | 3 | |
| Sept. 18 | Moderate or heavy rain shower | 13° /4° | 6.7 mm | 3 | |
| Sept. 19 | Partly cloudy | 16° /5° | 0.4 mm | 3 | |
| Sept. 20 | Sunny | 15° /6° | 0 mm | 5 | |
| Sept. 21 | Light rain | 16° /5° | 5.3 mm | 5 | |
| Sept. 22 | Light rain | 14° /4° | 8.4 mm | 3 | |
| Sept. 23 | Partly cloudy | 15° /4° | 0.2 mm | 5 | |
| Sept. 24 | Sunny | 19° /4° | 0 mm | 5 | |
| Sept. 25 | Sunny | 21° /6° | 0 mm | 5.3 | |
| Sept. 26 | Sunny | 19° /8° | 0 mm | 5 | |
| Sept. 27 | Sunny | 19° /6° | 0.2 mm | 4 | |
| Sept. 28 | Sunny | 17° /7° | 0.3 mm | 4 | |
| Sept. 29 | Sunny | 19° /7° | 0 mm | 5 | |
| Sept. 30 | Sunny | 15° /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 18° 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 58.7 mm spread over approximately 5 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 16 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 💧
Typically, Teton County has 5 rainy days in September with a total of 58.7 mm of rainfall.
UV exposure in Teton County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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