Woodstock Weather in September

What's the weather like in Woodstock (Illinois) in September 2025?

The climate in Woodstock during September can be summarized as mild and a little damp.

September is in the fall / autumn in Woodstock and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 23°C (74°F), whilst at night 11°C (51°F) is normal.

Woodstock weather averages (imperial / metric)
Daytime temperature 23.4°C 74°F
Nightly temperature 10.5°C 50.8°F
Average temperature 16.9°C 62.4°F
Daily sunshine 8 hrs
Avg rainfall 94 mm 3.7 ins
Rainy days 10 days
Sea temperature 19.2°C 66.5°F
Humidity 73%
Windspeed 15.1kph 9 mph

On average September is the 4th wettest month of the year in Woodstock with around 94mm 3.7 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 8 hours of sunshine per day.

September temperatures in Woodstock

Woodstock average temperature in September

September rainfall

Woodstock average rain in September

September hourly sunshine

Woodstock 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 Woodstock 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

Woodstock weather stats

Woodstock weather statistics
Hottest month: July 28.4°C 83.1°F
Driest month: February 30mm 1.2ins
Sunniest month: July 10.9hrs
Coldest month: January -3°C 26.6°F
Wettest month: June 105mm 4.1ins
Map showing location of Woodstock (42.31474, -88.4487) Woodstock map pin © Google

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