Cooperstown Weather in September

What's the weather like in Cooperstown (North Dakota) in September 2025?

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

September is in the fall / autumn in Cooperstown and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 21°C (69°F), whilst at night 7°C (44°F) is normal.

Cooperstown weather averages (imperial / metric)
Daytime temperature 20.8°C 69.4°F
Nightly temperature 6.5°C 43.6°F
Average temperature 13.6°C 56.5°F
Daily sunshine 7.9 hrs
Avg rainfall 47 mm 1.9 ins
Rainy days 8 days
Sea temperature 14.4°C 58°F
Humidity 68%
Windspeed 17.6kph 11 mph

On average September is the 5th wettest month of the year in Cooperstown with around 47mm 1.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.9 hours of sunshine per day.

September temperatures in Cooperstown

Cooperstown average temperature in September

September rainfall

Cooperstown average rain in September

September hourly sunshine

Cooperstown 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 Cooperstown 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

Cooperstown weather stats

Cooperstown weather statistics
Hottest month: July 27.8°C 82°F
Driest month: February 12mm 0.5ins
Sunniest month: July 11.7hrs
Coldest month: January -10.5°C 13.1°F
Wettest month: June 86mm 3.4ins
Map showing location of Cooperstown (47.44444, -98.12398) Cooperstown map pin © Google

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