Hourly Weather Forecast - Mount Vernon, IL

12 AM
27°F
0%
6mph
NNW
Mostly Cloudy
Humidity
84%
Feels like
20°F
Dew Point
23°F
1 AM
26°F
0%
6mph
NNW
Mostly Cloudy
Humidity
84%
Feels like
20°F
Dew Point
22°F
2 AM
26°F
0%
6mph
NNW
Mostly Cloudy
Humidity
83%
Feels like
19°F
Dew Point
21°F
3 AM
25°F
0%
5mph
NNW
Mostly Cloudy
Humidity
82%
Feels like
19°F
Dew Point
20°F
4 AM
24°F
0%
5mph
NNW
Mostly Cloudy
Humidity
83%
Feels like
19°F
Dew Point
20°F
5 AM
24°F
0%
4mph
N
Mostly Cloudy
Humidity
83%
Feels like
19°F
Dew Point
20°F
6 AM
24°F
0%
4mph
N
Partly Cloudy
Humidity
82%
Feels like
19°F
Dew Point
19°F
7 AM
25°F
0%
4mph
NNE
Partly Cloudy
Humidity
80%
Feels like
20°F
Dew Point
20°F
7:03 AM
8 AM
26°F
0%
4mph
NE
Partly Cloudy
Humidity
78%
Feels like
22°F
Dew Point
20°F
9 AM
28°F
0%
4mph
NE
Partly Cloudy
Humidity
75%
Feels like
24°F
Dew Point
21°F
10 AM
30°F
10%
4mph
NE
Partly Cloudy
Humidity
70%
Feels like
27°F
Dew Point
22°F
11 AM
32°F
10%
3mph
NE
Partly Cloudy
Humidity
65%
Feels like
29°F
Dew Point
22°F
12 PM
33°F
10%
3mph
NNE
Partly Cloudy
Humidity
63%
Feels like
33°F
Dew Point
22°F
1 PM
34°F
10%
3mph
NNE
Partly Cloudy
Humidity
62%
Feels like
32°F
Dew Point
23°F
2 PM
35°F
10%
4mph
N
Partly Cloudy
Humidity
62%
Feels like
31°F
Dew Point
23°F
3 PM
34°F
10%
4mph
N
Partly Cloudy
Humidity
63%
Feels like
30°F
Dew Point
22°F
4 PM
32°F
10%
4mph
N
Mostly Cloudy
Humidity
65%
Feels like
27°F
Dew Point
21°F
4:35 PM
5 PM
30°F
10%
5mph
N
Mostly Cloudy
Humidity
68%
Feels like
25°F
Dew Point
21°F
6 PM
29°F
20%
6mph
N
Cloudy
Humidity
71%
Feels like
24°F
Dew Point
21°F
7 PM
29°F
20%
6mph
N
Cloudy
Humidity
71%
Feels like
22°F
Dew Point
21°F
8 PM
28°F
20%
7mph
N
Cloudy
Humidity
71%
Feels like
20°F
Dew Point
19°F
9 PM
26°F
20%
8mph
N
Cloudy
Humidity
72%
Feels like
17°F
Dew Point
18°F
10 PM
23°F
20%
9mph
N
Mostly Cloudy
Humidity
73%
Feels like
14°F
Dew Point
16°F
11 PM
21°F
10%
10mph
N
Mostly Cloudy
Humidity
72%
Feels like
10°F
Dew Point
14°F

Snow and ice forecast through Thursday A.M.

Snow Barrels Across the Northern U.S.

Low pressure will produce a swath of snow from Minnesota to Maine into Thursday.

Rainfall Forecast for Northwest through Thursday

Heavy Rain, Flooding Soaks The Northwest

Wednesday's Weather Outlook

Wednesday's Weather Outlook

Weekly Drought Map for December 4, 2025

Active Week of Weather Leads to Mixed Drought Results

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

Cold Air Damming - Cause And Effects

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

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Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide