Belleville

Sherman County, Illinois, United States

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Current Weather

25°

Overcast

Feels Like: 24°

Min: 24°

Max: 36°

The next few hours will be overcast, with today reaching 36°C and dropping to 24°C. The coming days will be partly cloudy throughout the day.

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Hourly Forecast

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Today
Tomorrow

Daylight Hours

06:48

Sunrise

18:59

Sunset

12 hours 11 minutes of sunlight today

Moon

Waxing Crescent

12:34

Moonrise

21:13

Moonset

Daily Forecast

Today

24°
36°

Thursday

24°
35°

Friday

23°
35°

Saturday

23°
36°

Sunday

23°
33°

Monday

21°
29°

Tuesday

18°
27°

Wednesday

18°
28°

Thursday

17°
28°

Friday

17°
24°

Air Quality Data Available

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UV Index

No protection needed
0 Low
Low Extreme

Humidity

84% Humid
Low High

Weather in Belleville today, September 16, 2026

Expect a muted, overcast feel in Belleville on September 16, 2026 as cloud persists. Brighter breaks, if they arrive, should stay brief. The morning sky stays heavily clouded, with cover near 100% around 07:00. Grey conditions set the early tone before any later change.

The day peaks near 36°C and cools toward 24°C. Expect humidity between 41% and 90%, most humid near 23:00. Airflow remains manageable, reaching about 5.3 km/h around 17:00.

Through the afternoon cloud remains the main feature, with cover near 100% around 17:00. Bright spells should stay limited even as the day wears on. Horizontal visibility sits around 15.1 km, briefly nearer 1.4 km. Expect sunrise at 06:48, sunset at 18:59, and 12 hours 11 minutes of sunlight today overall.

In short, cloud leads the story in Belleville on September 16, 2026; expect limited sun and a peak around 36°C.

Frequently asked questions about weather in Belleville

How warm does it get in Belleville?

The warmest month in Belleville is July, with average high temperatures of 32°C. The average temperature during this period is around 27°C.

How cold does it get in Belleville?

The coldest month in Belleville is January, with average low temperatures of -3°C. The average temperature during this period is around 0°C.

What is the wettest time of year in Belleville?

The wettest month in Belleville is April, with an average of 144mm of precipitation.

What is the driest time of year in Belleville?

The driest month in Belleville is December, with an average of 69mm of precipitation.

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Metric (°C, km/h)