Hourly Weather Forecast - Illiopolis, IL

12 AM
40°F
20%
9mph
S
Mostly Cloudy
Humidity
87%
Feels like
34°F
Dew Point
36°F
1 AM
40°F
10%
9mph
S
Mostly Cloudy
Humidity
89%
Feels like
34°F
Dew Point
37°F
2 AM
40°F
10%
8mph
S
Mostly Cloudy
Humidity
91%
Feels like
35°F
Dew Point
38°F
3 AM
40°F
10%
8mph
S
Mostly Cloudy
Humidity
93%
Feels like
35°F
Dew Point
38°F
4 AM
40°F
10%
8mph
SSW
Mostly Cloudy
Humidity
94%
Feels like
35°F
Dew Point
39°F
5 AM
40°F
10%
8mph
SSW
Mostly Cloudy
Humidity
95%
Feels like
35°F
Dew Point
39°F
6 AM
41°F
10%
8mph
SSW
Mostly Cloudy
Humidity
95%
Feels like
35°F
Dew Point
39°F
7 AM
41°F
10%
8mph
SSW
Mostly Cloudy
Humidity
96%
Feels like
36°F
Dew Point
40°F
7:15 AM
8 AM
43°F
10%
8mph
SSW
Mostly Cloudy
Humidity
97%
Feels like
38°F
Dew Point
42°F
9 AM
44°F
10%
9mph
SSW
Mostly Cloudy
Humidity
96%
Feels like
39°F
Dew Point
43°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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