Hourly Weather Forecast - Illiopolis, IL

12 AM
23°F
0%
23mph
WNW
Windy
Humidity
64%
Feels like
7°F
Dew Point
13°F
1 AM
22°F
0%
22mph
WNW
Windy
Humidity
64%
Feels like
6°F
Dew Point
11°F
2 AM
21°F
0%
23mph
WNW
Windy
Humidity
64%
Feels like
5°F
Dew Point
11°F
3 AM
21°F
0%
21mph
WNW
Windy
Humidity
65%
Feels like
5°F
Dew Point
11°F
4 AM
20°F
0%
21mph
WNW
Windy
Humidity
66%
Feels like
5°F
Dew Point
11°F
5 AM
20°F
0%
19mph
WNW
Clear
Humidity
67%
Feels like
5°F
Dew Point
11°F
6 AM
20°F
0%
18mph
WNW
Clear
Humidity
67%
Feels like
5°F
Dew Point
11°F
7 AM
20°F
0%
17mph
WNW
Clear
Humidity
67%
Feels like
6°F
Dew Point
11°F
7:13 AM
8 AM
21°F
0%
15mph
WNW
Sunny
Humidity
66%
Feels like
7°F
Dew Point
11°F
9 AM
22°F
0%
14mph
WNW
Sunny
Humidity
65%
Feels like
9°F
Dew Point
12°F
10 AM
23°F
0%
12mph
WNW
Sunny
Humidity
62%
Feels like
12°F
Dew Point
12°F
11 AM
25°F
0%
11mph
WNW
Sunny
Humidity
59%
Feels like
15°F
Dew Point
13°F
12 PM
27°F
0%
9mph
W
Sunny
Humidity
57%
Feels like
18°F
Dew Point
14°F
1 PM
29°F
0%
9mph
W
Sunny
Humidity
55%
Feels like
20°F
Dew Point
15°F
2 PM
30°F
0%
10mph
WSW
Sunny
Humidity
53%
Feels like
21°F
Dew Point
15°F
3 PM
31°F
0%
9mph
WSW
Mostly Sunny
Humidity
53%
Feels like
23°F
Dew Point
16°F
4 PM
30°F
0%
8mph
SW
Mostly Sunny
Humidity
55%
Feels like
23°F
Dew Point
16°F
4:34 PM
5 PM
29°F
0%
7mph
S
Mostly Clear
Humidity
59%
Feels like
21°F
Dew Point
16°F
6 PM
28°F
0%
10mph
SSE
Mostly Clear
Humidity
62%
Feels like
19°F
Dew Point
17°F
7 PM
28°F
0%
11mph
SSE
Mostly Clear
Humidity
63%
Feels like
18°F
Dew Point
17°F
8 PM
28°F
0%
13mph
SSE
Clear
Humidity
64%
Feels like
18°F
Dew Point
18°F
9 PM
29°F
0%
14mph
SSE
Clear
Humidity
65%
Feels like
18°F
Dew Point
19°F
10 PM
29°F
0%
15mph
S
Clear
Humidity
65%
Feels like
18°F
Dew Point
19°F
11 PM
30°F
0%
15mph
S
Clear
Humidity
66%
Feels like
19°F
Dew Point
20°F

Rainfall and Snowfall Totals Through Thursday

Flooding Rain, Heavy Snow and Winds Slam Northwest, North-Central U.S.

The atmospheric river this week will keep buffeting the Pacific Northwest with heavy rain, snow, and high winds.

Thursday's Weather Outlook

Thursday's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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