Hourly Weather Forecast - Petersburg, IL

9 AM
8°F
0%
11mph
NW
Mostly Sunny
Humidity
72%
Feels like
-7°F
Dew Point
1°F
10 AM
11°F
0%
11mph
NW
Mostly Sunny
Humidity
70%
Feels like
-4°F
Dew Point
3°F
11 AM
14°F
0%
11mph
NW
Mostly Sunny
Humidity
67%
Feels like
0°F
Dew Point
5°F
12 PM
17°F
0%
11mph
NW
Mostly Sunny
Humidity
65%
Feels like
4°F
Dew Point
7°F
1 PM
19°F
0%
11mph
NW
Mostly Sunny
Humidity
63%
Feels like
7°F
Dew Point
8°F
2 PM
21°F
0%
11mph
NNW
Mostly Sunny
Humidity
61%
Feels like
9°F
Dew Point
9°F
3 PM
21°F
0%
10mph
NNW
Mostly Sunny
Humidity
60%
Feels like
11°F
Dew Point
10°F
4 PM
20°F
0%
8mph
NW
Mostly Sunny
Humidity
63%
Feels like
10°F
Dew Point
10°F
5 PM
17°F
0%
6mph
NW
Sunny
Humidity
68%
Feels like
9°F
Dew Point
9°F
5:17 PM
6 PM
15°F
0%
5mph
WNW
Clear
Humidity
72%
Feels like
7°F
Dew Point
8°F
7 PM
14°F
0%
5mph
WNW
Clear
Humidity
74%
Feels like
6°F
Dew Point
7°F
8 PM
12°F
0%
4mph
WNW
Mostly Clear
Humidity
75%
Feels like
5°F
Dew Point
6°F
9 PM
11°F
0%
4mph
WNW
Mostly Clear
Humidity
75%
Feels like
4°F
Dew Point
5°F
10 PM
10°F
0%
3mph
WNW
Mostly Clear
Humidity
76%
Feels like
10°F
Dew Point
4°F
11 PM
9°F
0%
3mph
W
Mostly Clear
Humidity
76%
Feels like
9°F
Dew Point
3°F

Snow Forecast through Sunday

Significant Snowstorm Blankets the Southeast

A coastal storm system forming off the Carolina coastline will cover southern Appalachia to the Outer Banks in snow through Sunday morning.

Saturday's Low Temperatures

Incredible Cold Holds Through The Weekend

Weekend Weather Outlook

Weekend Weather Outlook

Weekly Drought Map for January 29, 2026

Potent Storm System Brings Mixed Results to Drought Across the U.S.

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

Safety Tips For Icy Surfaces

Flu Update Valid For Week Ending January 24, 2026

Weekly Flu Update: Flu Activity Trend Going Up Again

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