Hourly Weather Forecast - Illiopolis, IL

12 AM
30°F
0%
9mph
NW
Clear
Humidity
76%
Feels like
22°F
Dew Point
23°F
1 AM
29°F
0%
8mph
NW
Clear
Humidity
75%
Feels like
21°F
Dew Point
22°F
2 AM
28°F
0%
8mph
NW
Clear
Humidity
75%
Feels like
20°F
Dew Point
21°F
3 AM
28°F
0%
8mph
NW
Clear
Humidity
74%
Feels like
19°F
Dew Point
20°F
4 AM
27°F
0%
7mph
NW
Clear
Humidity
75%
Feels like
19°F
Dew Point
20°F
5 AM
26°F
0%
7mph
NW
Clear
Humidity
75%
Feels like
18°F
Dew Point
19°F
6 AM
25°F
0%
6mph
NW
Clear
Humidity
75%
Feels like
18°F
Dew Point
19°F
7 AM
26°F
0%
6mph
NW
Clear
Humidity
74%
Feels like
19°F
Dew Point
19°F
7:14 AM
8 AM
27°F
0%
6mph
NW
Sunny
Humidity
71%
Feels like
20°F
Dew Point
19°F
9 AM
29°F
0%
6mph
NW
Sunny
Humidity
67%
Feels like
22°F
Dew Point
19°F
10 AM
31°F
0%
6mph
NW
Sunny
Humidity
62%
Feels like
25°F
Dew Point
19°F
11 AM
33°F
0%
6mph
NW
Sunny
Humidity
55%
Feels like
28°F
Dew Point
19°F
12 PM
35°F
0%
6mph
NW
Sunny
Humidity
51%
Feels like
30°F
Dew Point
19°F
1 PM
37°F
0%
6mph
NW
Sunny
Humidity
49%
Feels like
32°F
Dew Point
19°F
2 PM
37°F
0%
5mph
NW
Sunny
Humidity
49%
Feels like
33°F
Dew Point
20°F
3 PM
37°F
0%
4mph
NW
Sunny
Humidity
50%
Feels like
33°F
Dew Point
20°F
4 PM
35°F
0%
3mph
NNW
Sunny
Humidity
55%
Feels like
33°F
Dew Point
21°F
4:35 PM
5 PM
33°F
0%
3mph
NNE
Mostly Clear
Humidity
62%
Feels like
33°F
Dew Point
21°F
6 PM
31°F
0%
4mph
NE
Mostly Clear
Humidity
67%
Feels like
28°F
Dew Point
22°F
7 PM
31°F
0%
4mph
ENE
Partly Cloudy
Humidity
70%
Feels like
26°F
Dew Point
22°F
8 PM
30°F
0%
4mph
E
Partly Cloudy
Humidity
71%
Feels like
26°F
Dew Point
22°F
9 PM
30°F
0%
5mph
ESE
Mostly Cloudy
Humidity
71%
Feels like
25°F
Dew Point
22°F
10 PM
30°F
0%
5mph
ESE
Cloudy
Humidity
71%
Feels like
24°F
Dew Point
22°F
11 PM
29°F
10%
6mph
ESE
Cloudy
Humidity
70%
Feels like
24°F
Dew Point
21°F

Rainfall and Snowfall Totals Through Thursday

Pineapple Express Slams Northwestern U.S.

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

Wednesday's Weather Outlook

Today'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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