Hourly Weather Forecast - Petersburg, IL

12 AM
8°F
10%
3mph
W
Partly Cloudy
Humidity
77%
Feels like
8°F
Dew Point
2°F
1 AM
7°F
10%
3mph
W
Mostly Clear
Humidity
78%
Feels like
1°F
Dew Point
2°F
2 AM
6°F
10%
3mph
WSW
Clear
Humidity
79%
Feels like
0°F
Dew Point
1°F
3 AM
5°F
10%
3mph
WSW
Clear
Humidity
80%
Feels like
-2°F
Dew Point
0°F
4 AM
4°F
10%
3mph
SW
Mostly Clear
Humidity
80%
Feels like
-3°F
Dew Point
-1°F
5 AM
3°F
10%
3mph
SW
Partly Cloudy
Humidity
80%
Feels like
-4°F
Dew Point
-1°F
6 AM
4°F
10%
4mph
SSW
Partly Cloudy
Humidity
79%
Feels like
-4°F
Dew Point
-1°F
7 AM
6°F
10%
4mph
SSW
Mostly Cloudy
Humidity
77%
Feels like
-3°F
Dew Point
0°F
7:08 AM
8 AM
8°F
10%
5mph
SSW
Cloudy
Humidity
74%
Feels like
-1°F
Dew Point
2°F
9 AM
11°F
10%
6mph
SSW
Cloudy
Humidity
72%
Feels like
2°F
Dew Point
4°F
10 AM
15°F
10%
7mph
SSW
Cloudy
Humidity
68%
Feels like
5°F
Dew Point
6°F
11 AM
18°F
10%
9mph
SSW
Cloudy
Humidity
65%
Feels like
8°F
Dew Point
9°F
12 PM
21°F
10%
9mph
S
Cloudy
Humidity
64%
Feels like
11°F
Dew Point
11°F
1 PM
23°F
10%
10mph
S
Cloudy
Humidity
64%
Feels like
12°F
Dew Point
12°F
2 PM
24°F
10%
10mph
S
Mostly Cloudy
Humidity
65%
Feels like
14°F
Dew Point
14°F
3 PM
24°F
10%
10mph
S
Mostly Cloudy
Humidity
68%
Feels like
15°F
Dew Point
15°F
4 PM
24°F
30%
9mph
S
30% Chance of Snow
Humidity
71%
Feels like
15°F
Dew Point
16°F
5 PM
24°F
20%
8mph
S
Mostly Cloudy
Humidity
76%
Feels like
15°F
Dew Point
17°F
5:18 PM
6 PM
23°F
20%
7mph
S
Mostly Cloudy
Humidity
79%
Feels like
14°F
Dew Point
17°F
7 PM
22°F
30%
7mph
S
30% Chance Snow Showers
Humidity
81%
Feels like
14°F
Dew Point
18°F
8 PM
22°F
30%
7mph
SSW
30% Chance of Snow
Humidity
83%
Feels like
14°F
Dew Point
18°F
9 PM
22°F
30%
6mph
SSW
30% Chance Frozen Mix
Humidity
84%
Feels like
14°F
Dew Point
18°F
10 PM
22°F
30%
6mph
SSW
30% Chance Frozen Mix
Humidity
84%
Feels like
14°F
Dew Point
18°F
11 PM
22°F
20%
6mph
SSW
Mostly Cloudy
Humidity
85%
Feels like
14°F
Dew Point
18°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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