Winnett Weather in September

What's the weather like in Winnett (Montana) in September 2025?

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

September is in the fall / autumn in Winnett and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 5°C (41°F) is normal.

Winnett weather averages (imperial / metric)
Daytime temperature 22.3°C 72.1°F
Nightly temperature 5.1°C 41.2°F
Average temperature 13.7°C 56.7°F
Daily sunshine 9.2 hrs
Avg rainfall 29 mm 1.1 ins
Rainy days 7 days
Sea temperature 13.6°C 56.4°F
Humidity 53%
Windspeed 17.3kph 11 mph

On average September is the 6th wettest month of the year in Winnett with around 29mm 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 9.2 hours of sunshine per day.

September temperatures in Winnett

Winnett average temperature in September

September rainfall

Winnett average rain in September

September hourly sunshine

Winnett 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 Winnett 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

Winnett weather stats

Winnett weather statistics
Hottest month: July 29.5°C 85.1°F
Driest month: February 9mm 0.4ins
Sunniest month: July 13hrs
Coldest month: January -1.2°C 29.8°F
Wettest month: May 69mm 2.7ins
Map showing location of Winnett (47.00276, -108.35207) Winnett map pin © Google

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