Hourly Weather Forecast - Petersburg, IL

12 AM
12°F
0%
6mph
W
Clear
Humidity
49%
Feels like
2°F
Dew Point
-4°F
1 AM
11°F
0%
6mph
W
Clear
Humidity
50%
Feels like
2°F
Dew Point
-4°F
2 AM
11°F
0%
6mph
W
Clear
Humidity
50%
Feels like
1°F
Dew Point
-4°F
3 AM
11°F
0%
6mph
W
Clear
Humidity
51%
Feels like
1°F
Dew Point
-4°F
4 AM
10°F
0%
6mph
WSW
Clear
Humidity
51%
Feels like
0°F
Dew Point
-4°F
5 AM
10°F
0%
6mph
WSW
Clear
Humidity
51%
Feels like
0°F
Dew Point
-4°F
6 AM
11°F
0%
6mph
WSW
Clear
Humidity
51%
Feels like
0°F
Dew Point
-4°F
7 AM
12°F
0%
7mph
WSW
Clear
Humidity
49%
Feels like
1°F
Dew Point
-4°F
7:17 AM
8 AM
13°F
10%
7mph
WSW
Sunny
Humidity
47%
Feels like
2°F
Dew Point
-3°F
9 AM
15°F
10%
8mph
WSW
Sunny
Humidity
45%
Feels like
4°F
Dew Point
-3°F
10 AM
18°F
10%
9mph
WSW
Sunny
Humidity
41%
Feels like
7°F
Dew Point
-1°F
11 AM
21°F
10%
10mph
WSW
Sunny
Humidity
38%
Feels like
11°F
Dew Point
0°F
12 PM
24°F
10%
10mph
WSW
Sunny
Humidity
35%
Feels like
14°F
Dew Point
1°F
1 PM
26°F
10%
11mph
WSW
Mostly Sunny
Humidity
34%
Feels like
16°F
Dew Point
1°F
2 PM
28°F
10%
11mph
WSW
Partly Cloudy
Humidity
33%
Feels like
18°F
Dew Point
2°F
3 PM
28°F
10%
11mph
SW
Mostly Cloudy
Humidity
33%
Feels like
19°F
Dew Point
3°F
4 PM
28°F
10%
9mph
SW
Mostly Cloudy
Humidity
36%
Feels like
19°F
Dew Point
4°F
5 PM
26°F
10%
8mph
SSW
Cloudy
Humidity
40%
Feels like
18°F
Dew Point
6°F
5:04 PM
6 PM
26°F
10%
7mph
SSW
Cloudy
Humidity
44%
Feels like
18°F
Dew Point
7°F
7 PM
25°F
10%
7mph
S
Cloudy
Humidity
46%
Feels like
17°F
Dew Point
7°F
8 PM
25°F
10%
8mph
S
Cloudy
Humidity
48%
Feels like
16°F
Dew Point
8°F
9 PM
25°F
10%
9mph
S
Cloudy
Humidity
49%
Feels like
16°F
Dew Point
9°F
10 PM
26°F
10%
10mph
S
Cloudy
Humidity
50%
Feels like
16°F
Dew Point
10°F
11 PM
26°F
10%
10mph
S
Cloudy
Humidity
51%
Feels like
16°F
Dew Point
10°F

Snow Forecast through Saturday

Multiple Snowy Systems Hit Great Lakes, Northeast

As one disturbance exits New England tonight, another will be quick on its heels in the Great Lakes on Friday.

Friday's Weather Outlook

Friday's Weather Outlook

Weekend Weather Preview

Weekend Weather Preview

Weekly Drought Map for January 15, 2026

Active Weather Creates Mix of Improvements, Degradations to Drought Depiction

(Image provided by NOAA)

Polar Vortex: What Is It?

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

Safety Tips For Icy Surfaces

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