Mayville Weather in September

What's the weather like in Mayville (New York) in September 2025?

The climate in Mayville during September can be summarized as mild and damp.

September is in the fall / autumn in Mayville and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 21°C (70°F), whilst at night 11°C (51°F) is normal.

Mayville weather averages (imperial / metric)
Daytime temperature 21°C 69.8°F
Nightly temperature 10.8°C 51.4°F
Average temperature 15.9°C 60.6°F
Daily sunshine 6.7 hrs
Avg rainfall 115 mm 4.5 ins
Rainy days 11 days
Sea temperature 19.8°C 67.6°F
Humidity 76%
Windspeed 14kph 9 mph

On average September is the wettest month of the year in Mayville with around 115mm 4.5 inches of rain making it a damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.7 hours of sunshine per day.

September temperatures in Mayville

Mayville average temperature in September

September rainfall

Mayville average rain in September

September hourly sunshine

Mayville 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 Mayville 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

Mayville weather stats

Mayville weather statistics
Hottest month: July 25.3°C 77.5°F
Driest month: February 60mm 2.4ins
Sunniest month: July 9.8hrs
Coldest month: January -1.3°C 29.7°F
Wettest month: September 115mm 4.5ins
Map showing location of Mayville (42.25395, -79.50449) Mayville map pin © Google

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