Hourly Weather Forecast - Illiopolis, IL

7 PM
-5°F
0%
1mph
SW
Very Cold
Humidity
82%
Feels like
-5°F
Dew Point
-9°F
8 PM
-6°F
0%
2mph
S
Very Cold
Humidity
84%
Feels like
-6°F
Dew Point
-9°F
9 PM
-6°F
0%
3mph
S
Very Cold
Humidity
85%
Feels like
-6°F
Dew Point
-10°F
10 PM
-6°F
0%
3mph
S
Very Cold
Humidity
85%
Feels like
-14°F
Dew Point
-10°F
11 PM
-6°F
0%
4mph
S
Very Cold
Humidity
84%
Feels like
-16°F
Dew Point
-10°F

Wind chill temperatures Monday A.M.

Cold Weather Chills the Nation Down to the Gulf

Extreme cold paired with their wind chill values will shiver much of the nation.

Snowfall forecast through Monday evening.

Mid-Atlantic, Great Lakes Snow Piles Up

Monday's Weather Outlook

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

Cold Air Damming - Cause And Effects

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