Hourly Weather Forecast - Petersburg, IL

12 AM
22°F
20%
5mph
SW
Cloudy
Humidity
85%
Feels like
14°F
Dew Point
18°F
1 AM
21°F
30%
5mph
SW
30% Chance of Snow
Humidity
85%
Feels like
14°F
Dew Point
17°F
2 AM
21°F
20%
5mph
SW
Cloudy
Humidity
85%
Feels like
14°F
Dew Point
17°F
3 AM
21°F
20%
5mph
SW
Cloudy
Humidity
85%
Feels like
14°F
Dew Point
17°F
4 AM
21°F
20%
5mph
WSW
Cloudy
Humidity
85%
Feels like
14°F
Dew Point
17°F
5 AM
21°F
20%
5mph
WSW
Cloudy
Humidity
85%
Feels like
14°F
Dew Point
17°F
6 AM
21°F
20%
5mph
W
Cloudy
Humidity
85%
Feels like
14°F
Dew Point
17°F
7 AM
22°F
20%
5mph
W
Cloudy
Humidity
85%
Feels like
15°F
Dew Point
18°F
7:07 AM
8 AM
23°F
20%
5mph
W
Mostly Cloudy
Humidity
83%
Feels like
16°F
Dew Point
19°F
9 AM
25°F
20%
6mph
W
Mostly Cloudy
Humidity
82%
Feels like
18°F
Dew Point
20°F
10 AM
27°F
20%
6mph
W
Mostly Cloudy
Humidity
79%
Feels like
20°F
Dew Point
21°F
11 AM
29°F
20%
6mph
W
Partly Cloudy
Humidity
75%
Feels like
22°F
Dew Point
22°F
12 PM
31°F
20%
6mph
W
Partly Cloudy
Humidity
72%
Feels like
24°F
Dew Point
23°F
1 PM
32°F
20%
6mph
W
Partly Cloudy
Humidity
70%
Feels like
26°F
Dew Point
23°F
2 PM
33°F
20%
6mph
W
Partly Cloudy
Humidity
68%
Feels like
27°F
Dew Point
23°F
3 PM
32°F
20%
5mph
W
Partly Cloudy
Humidity
69%
Feels like
27°F
Dew Point
23°F
4 PM
31°F
20%
5mph
W
Partly Cloudy
Humidity
72%
Feels like
26°F
Dew Point
23°F
5 PM
29°F
20%
4mph
W
Partly Cloudy
Humidity
77%
Feels like
25°F
Dew Point
23°F
5:19 PM
6 PM
27°F
20%
3mph
WSW
Cloudy
Humidity
81%
Feels like
24°F
Dew Point
22°F
7 PM
26°F
20%
2mph
WSW
Cloudy
Humidity
82%
Feels like
26°F
Dew Point
22°F
8 PM
26°F
20%
2mph
W
Cloudy
Humidity
83%
Feels like
26°F
Dew Point
21°F
9 PM
26°F
20%
2mph
W
Cloudy
Humidity
83%
Feels like
26°F
Dew Point
21°F
10 PM
25°F
20%
1mph
NW
Cloudy
Humidity
83%
Feels like
25°F
Dew Point
20°F
11 PM
24°F
20%
2mph
N
Mostly Cloudy
Humidity
83%
Feels like
24°F
Dew Point
20°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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