Hourly Weather Forecast - Mount Vernon, IL

12 AM
12°F
0%
5mph
ENE
Clear
Humidity
58%
Feels like
4°F
Dew Point
0°F
1 AM
11°F
0%
4mph
E
Clear
Humidity
58%
Feels like
3°F
Dew Point
-1°F
2 AM
10°F
0%
4mph
E
Clear
Humidity
59%
Feels like
3°F
Dew Point
-1°F
3 AM
10°F
0%
4mph
E
Clear
Humidity
61%
Feels like
2°F
Dew Point
-1°F
4 AM
9°F
0%
4mph
E
Clear
Humidity
62%
Feels like
1°F
Dew Point
-1°F
5 AM
9°F
0%
4mph
ESE
Clear
Humidity
63%
Feels like
1°F
Dew Point
-1°F
6 AM
9°F
0%
5mph
ESE
Clear
Humidity
62%
Feels like
1°F
Dew Point
-1°F
7 AM
11°F
0%
5mph
SE
Clear
Humidity
69%
Feels like
2°F
Dew Point
3°F
7:05 AM
8 AM
14°F
10%
6mph
SE
Sunny
Humidity
66%
Feels like
5°F
Dew Point
4°F
9 AM
17°F
10%
6mph
SSE
Sunny
Humidity
58%
Feels like
8°F
Dew Point
5°F
10 AM
21°F
10%
7mph
SSE
Partly Cloudy
Humidity
50%
Feels like
12°F
Dew Point
6°F
11 AM
25°F
10%
7mph
S
Mostly Cloudy
Humidity
43%
Feels like
17°F
Dew Point
6°F
12 PM
28°F
10%
8mph
S
Cloudy
Humidity
38%
Feels like
20°F
Dew Point
6°F
1 PM
30°F
10%
8mph
S
Cloudy
Humidity
36%
Feels like
23°F
Dew Point
6°F
2 PM
31°F
10%
7mph
S
Cloudy
Humidity
37%
Feels like
24°F
Dew Point
8°F
3 PM
31°F
10%
7mph
S
Cloudy
Humidity
39%
Feels like
24°F
Dew Point
9°F

Snow and ice forecast through Thursday A.M.

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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

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Allergy Forecast

Snow & Ski Forecast

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