Kemmerer Weather in September

What's the weather like in Kemmerer (Wyoming) in September 2025?

The climate in Kemmerer during September can be summarized as mild and dry.

September is in the fall / autumn in Kemmerer and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 21°C (70°F), whilst at night -0°C (32°F) is normal.

Kemmerer weather averages (imperial / metric)
Daytime temperature 20.9°C 69.5°F
Nightly temperature -0°C 31.9°F
Average temperature 10.4°C 50.7°F
Daily sunshine 10 hrs
Avg rainfall 28 mm 1.1 ins
Rainy days 7 days
Sea temperature 16.3°C 61.3°F
Humidity 47%
Windspeed 14.8kph 9 mph

On average September is the 2nd wettest month of the year in Kemmerer with around 28mm 1.1 inches of rain making it a 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 10 hours of sunshine per day.

September temperatures in Kemmerer

Kemmerer average temperature in September

September rainfall

Kemmerer average rain in September

September hourly sunshine

Kemmerer 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 Kemmerer 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

Kemmerer weather stats

Kemmerer weather statistics
Hottest month: July 26.6°C 79.9°F
Driest month: February 16mm 0.6ins
Sunniest month: July 12.2hrs
Coldest month: January -2.8°C 27°F
Wettest month: May 32mm 1.3ins
Map showing location of Kemmerer (41.79245, -110.53767) Kemmerer map pin © Google

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