Hourly Weather Forecast - Decatur, IL

12 AM
27°F
0%
15mph
S
Partly Cloudy
Humidity
69%
Feels like
16°F
Dew Point
19°F
1 AM
28°F
0%
15mph
S
Partly Cloudy
Humidity
69%
Feels like
16°F
Dew Point
19°F
2 AM
29°F
0%
16mph
S
Partly Cloudy
Humidity
68%
Feels like
17°F
Dew Point
20°F
3 AM
29°F
10%
16mph
S
Mostly Cloudy
Humidity
69%
Feels like
17°F
Dew Point
20°F
4 AM
29°F
10%
16mph
S
Mostly Cloudy
Humidity
70%
Feels like
18°F
Dew Point
21°F
5 AM
29°F
10%
16mph
S
Cloudy
Humidity
72%
Feels like
18°F
Dew Point
21°F
6 AM
29°F
20%
17mph
S
Mostly Cloudy
Humidity
75%
Feels like
17°F
Dew Point
22°F
7 AM
29°F
20%
17mph
S
Partly Cloudy
Humidity
77%
Feels like
17°F
Dew Point
23°F
7:13 AM
8 AM
31°F
10%
17mph
S
Mostly Sunny
Humidity
75%
Feels like
19°F
Dew Point
24°F
9 AM
33°F
30%
17mph
S
30% Chance Rain Showers
Humidity
71%
Feels like
23°F
Dew Point
25°F
10 AM
36°F
30%
17mph
S
30% Chance Rain Showers
Humidity
67%
Feels like
26°F
Dew Point
26°F
11 AM
39°F
30%
17mph
SSW
30% Chance Rain Showers
Humidity
65%
Feels like
30°F
Dew Point
28°F
12 PM
41°F
30%
17mph
SSW
30% Chance Rain Showers
Humidity
64%
Feels like
32°F
Dew Point
30°F
1 PM
43°F
30%
17mph
SSW
30% Chance Rain Showers
Humidity
63%
Feels like
35°F
Dew Point
31°F
2 PM
44°F
30%
16mph
SSW
30% Chance Rain Showers
Humidity
63%
Feels like
36°F
Dew Point
32°F
3 PM
44°F
30%
15mph
SSW
30% Chance Rain Showers
Humidity
65%
Feels like
36°F
Dew Point
32°F
4 PM
43°F
30%
14mph
SSW
30% Chance Rain Showers
Humidity
68%
Feels like
36°F
Dew Point
33°F
4:33 PM
5 PM
42°F
30%
13mph
SSW
30% Chance Rain Showers
Humidity
71%
Feels like
35°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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