Hourly Weather Forecast - Illiopolis, IL

9 AM
33°F
0%
3mph
WNW
Partly Cloudy
Humidity
90%
Feels like
33°F
Dew Point
30°F
10 AM
34°F
0%
2mph
NW
Partly Cloudy
Humidity
88%
Feels like
34°F
Dew Point
31°F
11 AM
36°F
0%
2mph
NNW
Partly Cloudy
Humidity
86%
Feels like
36°F
Dew Point
32°F
12 PM
38°F
0%
1mph
NNE
Mostly Cloudy
Humidity
84%
Feels like
38°F
Dew Point
33°F
1 PM
38°F
0%
2mph
E
Mostly Cloudy
Humidity
83%
Feels like
38°F
Dew Point
34°F
2 PM
39°F
0%
4mph
ESE
Partly Cloudy
Humidity
82%
Feels like
36°F
Dew Point
34°F
3 PM
39°F
0%
5mph
ESE
Partly Cloudy
Humidity
82%
Feels like
35°F
Dew Point
34°F
4 PM
38°F
0%
7mph
SE
Partly Cloudy
Humidity
84%
Feels like
33°F
Dew Point
34°F
4:33 PM
5 PM
37°F
0%
8mph
SE
Partly Cloudy
Humidity
87%
Feels like
31°F
Dew Point
33°F
6 PM
36°F
0%
9mph
SE
Mostly Clear
Humidity
90%
Feels like
29°F
Dew Point
33°F
7 PM
37°F
0%
11mph
SSE
Hazy
Humidity
91%
Feels like
29°F
Dew Point
34°F
8 PM
37°F
0%
12mph
SSE
Partly Cloudy
Humidity
93%
Feels like
29°F
Dew Point
35°F
9 PM
38°F
0%
14mph
SSE
Partly Cloudy
Humidity
94%
Feels like
30°F
Dew Point
36°F
10 PM
39°F
0%
14mph
SSE
Partly Cloudy
Humidity
94%
Feels like
30°F
Dew Point
37°F
11 PM
40°F
0%
15mph
S
Partly Cloudy
Humidity
94%
Feels like
31°F
Dew Point
38°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

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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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