Hourly Weather Forecast - Decatur, IL

12 AM
21°F
0%
9mph
SW
Clear
Humidity
76%
Feels like
11°F
Dew Point
14°F
1 AM
20°F
0%
9mph
SSW
Clear
Humidity
77%
Feels like
10°F
Dew Point
14°F
2 AM
21°F
0%
9mph
SSW
Clear
Humidity
76%
Feels like
11°F
Dew Point
14°F
3 AM
21°F
0%
9mph
SSW
Clear
Humidity
76%
Feels like
11°F
Dew Point
15°F
4 AM
22°F
0%
9mph
SSW
Clear
Humidity
76%
Feels like
12°F
Dew Point
15°F
5 AM
22°F
0%
9mph
SSW
Clear
Humidity
75%
Feels like
12°F
Dew Point
16°F
6 AM
23°F
0%
9mph
SSW
Clear
Humidity
75%
Feels like
13°F
Dew Point
16°F
7 AM
24°F
0%
10mph
SSW
Clear
Humidity
76%
Feels like
14°F
Dew Point
18°F
7:10 AM
8 AM
25°F
0%
10mph
SSW
Sunny
Humidity
77%
Feels like
15°F
Dew Point
19°F
9 AM
27°F
0%
11mph
SSW
Sunny
Humidity
77%
Feels like
17°F
Dew Point
21°F
10 AM
29°F
0%
11mph
SSW
Sunny
Humidity
77%
Feels like
20°F
Dew Point
23°F
11 AM
31°F
0%
12mph
SSW
Sunny
Humidity
78%
Feels like
21°F
Dew Point
25°F
12 PM
32°F
0%
13mph
SSW
Sunny
Humidity
79%
Feels like
23°F
Dew Point
26°F
1 PM
33°F
0%
13mph
SSW
Sunny
Humidity
80%
Feels like
24°F
Dew Point
28°F
2 PM
34°F
0%
13mph
SSW
Sunny
Humidity
80%
Feels like
25°F
Dew Point
29°F
3 PM
34°F
0%
13mph
S
Sunny
Humidity
82%
Feels like
26°F
Dew Point
29°F
4 PM
34°F
0%
12mph
S
Sunny
Humidity
84%
Feels like
25°F
Dew Point
30°F
4:32 PM
5 PM
34°F
0%
13mph
S
Clear
Humidity
86%
Feels like
25°F
Dew Point
30°F
6 PM
34°F
0%
13mph
SSW
Clear
Humidity
87%
Feels like
25°F
Dew Point
31°F
7 PM
35°F
0%
13mph
SSW
Clear
Humidity
87%
Feels like
26°F
Dew Point
31°F
8 PM
35°F
0%
13mph
SSW
Mostly Clear
Humidity
88%
Feels like
26°F
Dew Point
31°F
9 PM
35°F
0%
13mph
SSW
Partly Cloudy
Humidity
88%
Feels like
26°F
Dew Point
32°F
10 PM
35°F
0%
13mph
SW
Partly Cloudy
Humidity
89%
Feels like
26°F
Dew Point
32°F
11 PM
35°F
0%
13mph
SW
Mostly Cloudy
Humidity
90%
Feels like
27°F
Dew Point
33°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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