Hourly Weather Forecast - Petersburg, IL

12 AM
24°F
20%
2mph
NNE
Mostly Cloudy
Humidity
83%
Feels like
24°F
Dew Point
19°F
1 AM
24°F
20%
3mph
NNE
Mostly Cloudy
Humidity
82%
Feels like
19°F
Dew Point
19°F
2 AM
23°F
20%
4mph
NNE
Cloudy
Humidity
82%
Feels like
18°F
Dew Point
18°F
3 AM
23°F
20%
4mph
NNE
Cloudy
Humidity
82%
Feels like
17°F
Dew Point
18°F
4 AM
22°F
20%
4mph
NNE
Cloudy
Humidity
82%
Feels like
16°F
Dew Point
18°F
5 AM
22°F
20%
5mph
NNE
Cloudy
Humidity
82%
Feels like
16°F
Dew Point
18°F
6 AM
22°F
10%
6mph
NNE
Cloudy
Humidity
82%
Feels like
15°F
Dew Point
18°F
7 AM
23°F
10%
6mph
NE
Cloudy
Humidity
82%
Feels like
15°F
Dew Point
18°F
7:06 AM
8 AM
23°F
10%
6mph
NE
Cloudy
Humidity
81%
Feels like
15°F
Dew Point
18°F
9 AM
24°F
10%
6mph
NE
Cloudy
Humidity
80%
Feels like
16°F
Dew Point
19°F
10 AM
25°F
10%
6mph
NNE
Cloudy
Humidity
77%
Feels like
17°F
Dew Point
19°F
11 AM
26°F
10%
6mph
NNE
Cloudy
Humidity
74%
Feels like
19°F
Dew Point
19°F
12 PM
27°F
10%
7mph
NNE
Cloudy
Humidity
71%
Feels like
20°F
Dew Point
19°F
1 PM
28°F
10%
7mph
NNE
Cloudy
Humidity
69%
Feels like
21°F
Dew Point
19°F
2 PM
29°F
10%
7mph
NNE
Cloudy
Humidity
67%
Feels like
22°F
Dew Point
19°F
3 PM
29°F
10%
7mph
NNE
Cloudy
Humidity
66%
Feels like
22°F
Dew Point
19°F
4 PM
28°F
10%
6mph
NNE
Cloudy
Humidity
68%
Feels like
21°F
Dew Point
19°F
5 PM
26°F
10%
6mph
N
Cloudy
Humidity
72%
Feels like
20°F
Dew Point
19°F
5:20 PM
6 PM
25°F
10%
5mph
N
Cloudy
Humidity
75%
Feels like
19°F
Dew Point
18°F
7 PM
24°F
10%
5mph
N
Cloudy
Humidity
76%
Feels like
17°F
Dew Point
17°F
8 PM
23°F
10%
5mph
NNE
Cloudy
Humidity
76%
Feels like
16°F
Dew Point
17°F
9 PM
22°F
10%
6mph
NNE
Cloudy
Humidity
76%
Feels like
15°F
Dew Point
16°F
10 PM
21°F
10%
6mph
NNE
Cloudy
Humidity
76%
Feels like
14°F
Dew Point
15°F
11 PM
20°F
10%
5mph
NNE
Mostly Cloudy
Humidity
77%
Feels like
13°F
Dew Point
14°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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