Hourly Weather Forecast - Mount Vernon, IL

12 AM
24°F
0%
7mph
SSW
Clear
Humidity
58%
Feels like
16°F
Dew Point
12°F
1 AM
24°F
0%
7mph
SSW
Clear
Humidity
60%
Feels like
16°F
Dew Point
12°F
2 AM
24°F
0%
7mph
SSW
Clear
Humidity
62%
Feels like
16°F
Dew Point
13°F
3 AM
24°F
0%
7mph
SSW
Clear
Humidity
63%
Feels like
16°F
Dew Point
13°F
4 AM
24°F
0%
6mph
SSW
Clear
Humidity
64%
Feels like
16°F
Dew Point
14°F
5 AM
26°F
0%
6mph
SSW
Clear
Humidity
61%
Feels like
19°F
Dew Point
15°F
6 AM
28°F
0%
7mph
SSW
Clear
Humidity
58%
Feels like
21°F
Dew Point
16°F
7 AM
31°F
0%
7mph
SSW
Clear
Humidity
55%
Feels like
24°F
Dew Point
17°F
7:05 AM
8 AM
32°F
0%
7mph
SSW
Sunny
Humidity
56%
Feels like
25°F
Dew Point
19°F
9 AM
34°F
0%
8mph
SSW
Sunny
Humidity
56%
Feels like
28°F
Dew Point
20°F
10 AM
37°F
0%
9mph
SSW
Sunny
Humidity
55%
Feels like
30°F
Dew Point
22°F
11 AM
39°F
0%
9mph
SSW
Sunny
Humidity
54%
Feels like
33°F
Dew Point
24°F
12 PM
40°F
0%
10mph
SSW
Sunny
Humidity
55%
Feels like
34°F
Dew Point
25°F
1 PM
41°F
0%
10mph
SSW
Sunny
Humidity
57%
Feels like
34°F
Dew Point
27°F
2 PM
40°F
0%
11mph
SSW
Mostly Sunny
Humidity
60%
Feels like
34°F
Dew Point
28°F
3 PM
40°F
0%
11mph
S
Mostly Sunny
Humidity
63%
Feels like
33°F
Dew Point
28°F
4 PM
38°F
0%
11mph
SSW
Mostly Sunny
Humidity
68%
Feels like
31°F
Dew Point
29°F
4:36 PM
5 PM
37°F
0%
11mph
SSW
Mostly Clear
Humidity
71%
Feels like
30°F
Dew Point
29°F
6 PM
37°F
0%
11mph
SSW
Clear
Humidity
74%
Feels like
30°F
Dew Point
29°F
7 PM
37°F
0%
11mph
SSW
Clear
Humidity
74%
Feels like
29°F
Dew Point
29°F
8 PM
37°F
0%
11mph
SSW
Clear
Humidity
75%
Feels like
29°F
Dew Point
29°F
9 PM
37°F
0%
11mph
SSW
Clear
Humidity
76%
Feels like
29°F
Dew Point
30°F
10 PM
37°F
0%
10mph
SW
Mostly Clear
Humidity
77%
Feels like
29°F
Dew Point
30°F
11 PM
36°F
0%
10mph
SW
Partly Cloudy
Humidity
79%
Feels like
29°F
Dew Point
30°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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