Hourly Weather Forecast - Petersburg, IL

2 AM
-1°F
0%
7mph
S
Very Cold
Humidity
75%
Feels like
-14°F
Dew Point
-7°F
3 AM
1°F
0%
9mph
S
Mostly Clear
Humidity
74%
Feels like
-14°F
Dew Point
-5°F
4 AM
3°F
0%
10mph
S
Mostly Clear
Humidity
73%
Feels like
-12°F
Dew Point
-3°F
5 AM
5°F
0%
11mph
S
Mostly Clear
Humidity
72%
Feels like
-11°F
Dew Point
-2°F
6 AM
7°F
0%
13mph
S
Partly Cloudy
Humidity
72%
Feels like
-9°F
Dew Point
0°F
7 AM
9°F
0%
13mph
S
Mostly Clear
Humidity
71%
Feels like
-7°F
Dew Point
1°F
7:14 AM
8 AM
11°F
0%
13mph
S
Mostly Sunny
Humidity
69%
Feels like
-4°F
Dew Point
3°F
9 AM
14°F
0%
13mph
S
Mostly Sunny
Humidity
68%
Feels like
0°F
Dew Point
5°F
10 AM
18°F
0%
12mph
SSW
Partly Cloudy
Humidity
64%
Feels like
5°F
Dew Point
8°F
11 AM
22°F
0%
12mph
SSW
Mostly Sunny
Humidity
61%
Feels like
10°F
Dew Point
10°F
12 PM
25°F
0%
11mph
SSW
Mostly Sunny
Humidity
58%
Feels like
14°F
Dew Point
13°F
1 PM
28°F
0%
11mph
SSW
Sunny
Humidity
58%
Feels like
18°F
Dew Point
15°F
2 PM
29°F
0%
10mph
SW
Sunny
Humidity
58%
Feels like
21°F
Dew Point
17°F
3 PM
30°F
0%
9mph
SW
Mostly Sunny
Humidity
60%
Feels like
22°F
Dew Point
18°F
4 PM
29°F
0%
7mph
SW
Mostly Sunny
Humidity
62%
Feels like
21°F
Dew Point
17°F
4:35 PM
5 PM
26°F
0%
6mph
SW
Mostly Clear
Humidity
65%
Feels like
19°F
Dew Point
16°F
6 PM
24°F
0%
6mph
SW
Mostly Clear
Humidity
68%
Feels like
16°F
Dew Point
15°F
7 PM
23°F
0%
5mph
SW
Mostly Clear
Humidity
71%
Feels like
16°F
Dew Point
15°F
8 PM
22°F
0%
5mph
SW
Clear
Humidity
74%
Feels like
15°F
Dew Point
15°F
9 PM
22°F
0%
5mph
SW
Clear
Humidity
76%
Feels like
15°F
Dew Point
15°F
10 PM
21°F
0%
5mph
SW
Clear
Humidity
77%
Feels like
14°F
Dew Point
15°F
11 PM
21°F
0%
4mph
SW
Clear
Humidity
78%
Feels like
15°F
Dew Point
15°F

Wind chill temperatures Monday A.M.

Cold Weather Chills the Nation Down to the Gulf

Extreme cold paired with their wind chill values will shiver much of the nation.

Snowfall forecast through Monday evening.

Mid-Atlantic, Great Lakes Snow Piles Up

Monday's Weather Outlook

Monday's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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