Marion Weather in September

What's the weather like in Marion (Illinois) in September 2024?

The climate in Marion during September can be summarized as warm, humid and a little damp.

September is in the fall / autumn in Marion and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (81°F), whilst at night 14°C (57°F) is normal.

Marion weather averages (imperial / metric)
Daytime temperature 27.3°C 81.1°F
Nightly temperature 14.1°C 57.4°F
Average temperature 20.7°C 69.3°F
Daily sunshine 8.7 hrs
Avg rainfall 81 mm 3.2 ins
Rainy days 8 days
Sea temperature 22.5°C 72.4°F
Humidity 72%
Windspeed 12.2kph 8 mph

On average September is the 4th driest month of the year in Marion with around 81mm 3.2 inches of rain making it a a little damp 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 8.7 hours of sunshine per day.

September temperatures in Marion

Marion average temperature in September

September rainfall

Marion average rain in September

September hourly sunshine

Marion 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 Marion in September 2024.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Marion weather stats

Marion weather statistics
Hottest month: July 31.7°C 89.1°F
Driest month: January 72mm 2.8ins
Sunniest month: July 11hrs
Coldest month: January 4.2°C 39.6°F
Wettest month: March 124mm 4.9ins
Map showing location of Marion (37.73061, -88.93313) Marion map pin © Google

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