Cheyenne (WY)
September
Weather in Cheyenne, Wyoming for September 2027
Your guide to Cheyenne weather in September - trends and predictions
In general, the average temperature in Cheyenne at the beginning of September is 26.4 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 23.5 °C by the end of September.
Cheyenne experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 82.8 mm.
Is September a good time to visit Cheyenne? check out the best time to travel to Cheyenne page.
✨ Is September a good time to visit Cheyenne? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
23
Dry days
7
Rainy days
0
Snow days
24°/11°
Temperatures
26 km/h
Avg max wind
45 %
Avg humidity
Cheyenne Weather September
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Temperatures trend during September in Cheyenne
See the weather trend as well as the moving average line
September weather in Cheyenne day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 27° /14° | 0 mm | 7 | |
| Sept. 2 |  Patchy rain possible | 28° /14° | 0.6 mm | 7 | |
| Sept. 3 | Sunny | 28° /15° | 0.3 mm | 7 | |
| Sept. 4 | Patchy rain possible | 28° /14° | 1.4 mm | 7 | |
| Sept. 5 |  Partly cloudy | 22° /13° | 0.1 mm | 5 | |
| Sept. 6 | Sunny | 25° /12° | 0 mm | 7 | |
| Sept. 7 |  Light rain | 27° /14° | 3.7 mm | 5 | |
| Sept. 8 |  Overcast | 27° /14° | 0.5 mm | 6 | |
| Sept. 9 | Patchy rain possible | 27° /13° | 0.3 mm | 7 | |
| Sept. 10 | Partly cloudy | 28° /14° | 0 mm | 7 | |
| Sept. 11 | Light rain shower | 27° /14° | 1.5 mm | 5 | |
| Sept. 12 | Partly cloudy | 26° /11° | 0 mm | 6 | |
| Sept. 13 | Patchy rain possible | 25° /11° | 1.4 mm | 4 | |
| Sept. 14 | Sunny | 25° /12° | 0 mm | 5 | |
| Sept. 15 | Patchy rain possible | 24° /10° | 0.3 mm | 6.8 | |
| Sept. 16 | Partly cloudy | 24° /11° | 0.7 mm | 4 | |
| Sept. 17 |  Moderate rain | 20° /12° | 15.9 mm | 3 | |
| Sept. 18 | Patchy rain possible | 21° /9° | 1.5 mm | 3 | |
| Sept. 19 | Sunny | 23° /8° | 0.8 mm | 5 | |
| Sept. 20 | Patchy rain possible | 23° /8° | 1.2 mm | 6 | |
| Sept. 21 |  Moderate or heavy rain shower | 19° /9° | 7 mm | 5 | |
| Sept. 22 |  Heavy rain | 18° /7° | 44.1 mm | 4 | |
| Sept. 23 | Overcast | 18° /7° | 0.4 mm | 3 | |
| Sept. 24 | Partly cloudy | 21° /9° | 0.6 mm | 4 | |
| Sept. 25 | Sunny | 24° /8° | 0.5 mm | 5 | |
| Sept. 26 | Sunny | 27° /10° | 0 mm | 5.8 | |
| Sept. 27 | Partly cloudy | 24° /12° | 0.1 mm | 5 | |
| Sept. 28 | Sunny | 24° /11° | 0 mm | 4 | |
| Sept. 29 | Partly cloudy | 24° /10° | 0 mm | 4 | |
| Sept. 30 | Partly cloudy | 21° /8° | 0 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Cheyenne 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 Cheyenne forecast closer to your planned date for the most up-to-date weather information.
Change Month
Cheyenne in September - FAQ
What are the expected maximum and minimum temperatures in Cheyenne during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Cheyenne during September?
Moderate rainfall is anticipated in Cheyenne during September, with a total of 82.8 mm spread over approximately 7 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Cheyenne during September?
The average wind speed in Cheyenne during September is 26 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Cheyenne
Explore the daily rainfall trends and prepare for Cheyennes September weather 💧
Typically, Cheyenne has 7 rainy days in September with a total of 82.8 mm of rainfall.
UV exposure in Cheyenne during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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