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United States weather

Weather in Teton County, Wyoming for September 2025

Your guide to Teton County weather in September - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Teton County during September is quite rare, with fewer than 2 snowy days on average.
    According to Teton County snow forecast for September 2025, 1 snowy day is expected until the end of the month at Tuesday, September 30.

    • Temperatures

  • Until now, September 2025 in Teton County is slightly cooler than the historical average by -1.1 °F.

  • Expect cooler weather in the next days in Teton County with the forecast suggesting a temperature of 18.1 °F, lower than the historical average.

  • In general, the average temperature in Teton County at the beginning of September is 22.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.7 °F by the end of September.

    • Rain 🌧️

  • With an average of 4 rainy days, Teton County experiences minimal rainfall in September.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
26
Dry days
Average rainy days
4
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/6°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
45 %
Avg humidity

Teton County Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
25°
2
Overcast
25°
3
Patchy rain possible
23°
4
Moderate rain at times
21°
5
Sunny
21°
6
Sunny
22°
7
Sunny
22°
8
Cloudy
22°
9
Sunny
22°
10
Patchy rain possible
22°
11
Patchy rain possible
18°
12
Moderate or heavy rain shower
12°
13
Cloudy
14°
14
Partly cloudy
18°
15
Overcast
15°
16
Overcast
20°
17
Sunny
16°
18
Sunny
18°
19
Sunny
19°
20
Sunny
22°
21
Sunny
19°
22
Sunny
19°
23
Sunny
23°
24
Patchy rain possible
11°
25
Sunny
21°
26
Sunny
23°
27
Patchy rain possible
20°
28
Sunny
20°
29
Sunny
17°
30
Patchy rain possible
5°

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
August October
Date Weather Temperatures Rain Snow More
Sept. 1 Sunny
Sunny
 25° /8° 0 mm 0 cm
Sept. 2 Overcast
Overcast
 25° /10° 0 mm 0 cm
Sept. 3 Patchy rain possible
Patchy rain possible
 23° /10° 0.3 mm 0 cm
Sept. 4 Moderate rain at times
Moderate rain at times
 21° /9° 0.3 mm 0 cm
Sept. 5 Sunny
Sunny
 21° /6° 0 mm 0 cm
Sept. 6 Sunny
Sunny
 22° /6° 0 mm 0 cm
Sept. 7 Sunny
Sunny
 22° /9° 6.9 mm 0 cm
Sept. 8 Cloudy
Cloudy
 22° /8° 0 mm 0 cm
Sept. 9 Sunny
Sunny
 22° /9° 0 mm 0 cm
Sept. 10 Patchy rain possible
Patchy rain possible
 22° /8° 0.1 mm 0 cm
Sept. 11 Patchy rain possible
Patchy rain possible
 18° /8° 0.6 mm 0 cm
Sept. 12 Moderate or heavy rain shower
Moderate or heavy rain shower
 12° /5° 7 mm 0 cm
Sept. 13 Cloudy
Cloudy
 14° /4° 20.9 mm 0 cm
Sept. 14 Partly cloudy
Partly cloudy
 18° /4° 0 mm 0 cm
Sept. 15 Overcast
Overcast
 15° /4° 0.1 mm 0 cm
Sept. 16 Overcast
Overcast
 20° /7° 0 mm 0 cm
Sept. 17 Sunny
Sunny
 16° /3° 0 mm 0 cm
Sept. 18 Sunny
Sunny
 18° /4° 0 mm 0 cm
Sept. 19 Sunny
Sunny
 19° /7° 0 mm 0 cm
Sept. 20 Sunny
Sunny
 22° /7° 0 mm 0 cm
Sept. 21 Sunny
Sunny
 19° /7° 0 mm 0 cm
Sept. 22 Sunny
Sunny
 19° /4° 0 mm 0 cm
Sept. 23 Sunny
Sunny
 23° /4° 0 mm 0 cm
Sept. 24 Patchy rain possible
Patchy rain possible
 11° /4° 0.6 mm 0 cm
Sept. 25 Sunny
Sunny
 21° /3° 0 mm 0 cm
Sept. 26 Sunny
Sunny
 23° /7° 0 mm 0 cm
Sept. 27 Patchy rain possible
Patchy rain possible
 20° /8° 0.2 mm 0 cm
Sept. 28 Sunny
Sunny
 20° /5° 0 mm 0 cm
Sept. 29 Sunny
Sunny
 17° /5° 0 mm 0 cm
Sept. 30 Patchy rain possible
Patchy rain possible
 5° /-1° 0.3 mm 0.2 cm
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.
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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 4 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.

Teton County snow forecast September 2025

Track daily snowfall levels and discover Teton County’s snowy potential this September ❄️

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
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Jackson
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Location coordinates 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.

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