Cheyenne Weather in September

What's the weather like in Cheyenne (Oklahoma) in September 2025?

The climate in Cheyenne during September can be summarized as warm and reasonably dry.

September is in the fall / autumn in Cheyenne and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 29°C (84°F), whilst at night 14°C (58°F) is normal.

Cheyenne weather averages (imperial / metric)
Daytime temperature 29.1°C 84.3°F
Nightly temperature 14.4°C 57.8°F
Average temperature 21.7°C 71.1°F
Daily sunshine 9.5 hrs
Avg rainfall 71 mm 2.8 ins
Rainy days 7 days
Sea temperature 21.8°C 71.2°F
Humidity 64%
Windspeed 20.2kph 13 mph

On average September is the 3rd wettest month of the year in Cheyenne with around 71mm 2.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.5 hours of sunshine per day.

September temperatures in Cheyenne

Cheyenne average temperature in September

September rainfall

Cheyenne average rain in September

September hourly sunshine

Cheyenne average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Cheyenne in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Cheyenne weather stats

Cheyenne weather statistics
Hottest month: July 34.3°C 93.7°F
Driest month: January 15mm 0.6ins
Sunniest month: July 12.3hrs
Coldest month: January 8.4°C 47.1°F
Wettest month: May 107mm 4.2ins
Map showing location of Cheyenne (35.61394, -99.67149) Cheyenne map pin © Google

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