Carlyle Weather in September

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

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

September is in the fall / autumn in Carlyle and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (80°F), whilst at night 14°C (57°F) is normal.

Carlyle weather averages (imperial / metric)
Daytime temperature 26.7°C 80°F
Nightly temperature 13.8°C 56.8°F
Average temperature 20.2°C 68.4°F
Daily sunshine 8.7 hrs
Avg rainfall 82 mm 3.2 ins
Rainy days 8 days
Sea temperature 21.3°C 70.4°F
Humidity 72%
Windspeed 13.3kph 8 mph

On average September is the 6th driest month of the year in Carlyle with around 82mm 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 Carlyle

Carlyle average temperature in September

September rainfall

Carlyle average rain in September

September hourly sunshine

Carlyle 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 Carlyle 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

Carlyle weather stats

Carlyle weather statistics
Hottest month: July 31.2°C 88.2°F
Driest month: January 49mm 1.9ins
Sunniest month: July 10.9hrs
Coldest month: January 2.9°C 37.2°F
Wettest month: May 106mm 4.2ins
Map showing location of Carlyle (38.61033, -89.37258) Carlyle map pin © Google

Locations nearby

Top United States locations