Hourly Weather Forecast - Mount Vernon, IL

12 AM
36°F
0%
10mph
SW
Mostly Cloudy
Humidity
83%
Feels like
29°F
Dew Point
31°F
1 AM
36°F
0%
9mph
SW
Cloudy
Humidity
84%
Feels like
29°F
Dew Point
32°F
2 AM
36°F
0%
9mph
SW
Cloudy
Humidity
86%
Feels like
29°F
Dew Point
32°F
3 AM
36°F
0%
8mph
SW
Cloudy
Humidity
88%
Feels like
30°F
Dew Point
33°F
4 AM
36°F
0%
7mph
SW
Cloudy
Humidity
90%
Feels like
30°F
Dew Point
33°F
5 AM
36°F
0%
6mph
SW
Cloudy
Humidity
93%
Feels like
31°F
Dew Point
34°F
6 AM
36°F
0%
5mph
SW
Cloudy
Humidity
96%
Feels like
31°F
Dew Point
35°F
7 AM
36°F
0%
5mph
SW
Mostly Cloudy
Humidity
98%
Feels like
32°F
Dew Point
36°F
7:06 AM
8 AM
38°F
0%
5mph
SW
Partly Cloudy
Humidity
96%
Feels like
34°F
Dew Point
37°F
9 AM
40°F
0%
4mph
SW
Partly Cloudy
Humidity
92%
Feels like
37°F
Dew Point
38°F
10 AM
42°F
0%
4mph
SW
Mostly Sunny
Humidity
89%
Feels like
39°F
Dew Point
39°F
11 AM
44°F
0%
4mph
SW
Mostly Sunny
Humidity
86%
Feels like
42°F
Dew Point
40°F
12 PM
44°F
0%
4mph
SW
Sunny
Humidity
85%
Feels like
43°F
Dew Point
40°F
1 PM
45°F
0%
4mph
SSW
Sunny
Humidity
83%
Feels like
43°F
Dew Point
40°F
2 PM
45°F
0%
4mph
S
Sunny
Humidity
83%
Feels like
43°F
Dew Point
40°F
3 PM
45°F
0%
5mph
S
Sunny
Humidity
84%
Feels like
42°F
Dew Point
40°F
4 PM
43°F
0%
5mph
SSE
Mostly Sunny
Humidity
88%
Feels like
40°F
Dew Point
40°F
4:36 PM
5 PM
41°F
0%
6mph
SSE
Partly Cloudy
Humidity
93%
Feels like
37°F
Dew Point
39°F
6 PM
40°F
0%
6mph
SSE
Partly Cloudy
Humidity
95%
Feels like
36°F
Dew Point
39°F
7 PM
40°F
0%
7mph
SSE
Mostly Cloudy
Humidity
96%
Feels like
35°F
Dew Point
39°F
8 PM
40°F
0%
8mph
SSE
Mostly Cloudy
Humidity
98%
Feels like
35°F
Dew Point
40°F
9 PM
41°F
10%
9mph
S
Foggy
Humidity
99%
Feels like
36°F
Dew Point
41°F
10 PM
42°F
10%
9mph
S
Foggy
Humidity
100%
Feels like
36°F
Dew Point
42°F
11 PM
43°F
20%
10mph
S
Foggy
Humidity
99%
Feels like
38°F
Dew Point
43°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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