Hourly Weather Forecast - Vandalia, IL

7 AM
32°F
0%
12mph
SSW
Mostly Cloudy
Humidity
85%
Feels like
23°F
Dew Point
28°F
7:03 AM
8 AM
33°F
0%
12mph
SSW
Partly Cloudy
Humidity
84%
Feels like
24°F
Dew Point
29°F
9 AM
35°F
0%
12mph
SSW
Mostly Sunny
Humidity
82%
Feels like
26°F
Dew Point
30°F
10 AM
38°F
0%
13mph
SSW
Sunny
Humidity
78%
Feels like
30°F
Dew Point
31°F
11 AM
41°F
0%
13mph
SSW
Mostly Sunny
Humidity
72%
Feels like
33°F
Dew Point
32°F
12 PM
43°F
0%
13mph
SSW
Partly Cloudy
Humidity
68%
Feels like
36°F
Dew Point
33°F
1 PM
44°F
0%
13mph
SSW
Partly Cloudy
Humidity
67%
Feels like
38°F
Dew Point
34°F
2 PM
45°F
0%
13mph
SSW
Partly Cloudy
Humidity
68%
Feels like
39°F
Dew Point
35°F
3 PM
45°F
0%
13mph
S
Mostly Cloudy
Humidity
69%
Feels like
39°F
Dew Point
35°F
4 PM
44°F
0%
13mph
S
Partly Cloudy
Humidity
70%
Feels like
38°F
Dew Point
35°F
4:34 PM
5 PM
43°F
10%
13mph
S
Mostly Cloudy
Humidity
72%
Feels like
36°F
Dew Point
35°F
6 PM
42°F
10%
14mph
S
Cloudy
Humidity
74%
Feels like
35°F
Dew Point
34°F
7 PM
42°F
10%
15mph
SSW
Cloudy
Humidity
75%
Feels like
34°F
Dew Point
34°F
8 PM
42°F
10%
16mph
SSW
Cloudy
Humidity
76%
Feels like
34°F
Dew Point
35°F
9 PM
42°F
0%
16mph
SSW
Cloudy
Humidity
77%
Feels like
34°F
Dew Point
35°F
10 PM
42°F
0%
17mph
SSW
Cloudy
Humidity
77%
Feels like
34°F
Dew Point
35°F
11 PM
42°F
10%
17mph
SW
Cloudy
Humidity
76%
Feels like
35°F
Dew Point
35°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, Flooding Rain Impacts the Northwest

Today's Weather Outlook

Today'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

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide