Hourly Weather Forecast - Alton, IL

2 PM
14°F
0%
4mph
NNW
Sunny
Humidity
54%
Feels like
8°F
Dew Point
0°F
3 PM
14°F
0%
3mph
NNW
Sunny
Humidity
53%
Feels like
9°F
Dew Point
0°F
4 PM
13°F
0%
2mph
N
Sunny
Humidity
55%
Feels like
13°F
Dew Point
0°F
4:39 PM
5 PM
13°F
0%
2mph
N
Clear
Humidity
58%
Feels like
13°F
Dew Point
1°F
6 PM
12°F
0%
1mph
NE
Clear
Humidity
62%
Feels like
12°F
Dew Point
2°F
7 PM
12°F
0%
1mph
ENE
Clear
Humidity
63%
Feels like
12°F
Dew Point
2°F
8 PM
11°F
0%
2mph
E
Clear
Humidity
64%
Feels like
11°F
Dew Point
2°F
9 PM
11°F
0%
2mph
ESE
Clear
Humidity
64%
Feels like
11°F
Dew Point
1°F
10 PM
11°F
0%
2mph
SE
Clear
Humidity
64%
Feels like
11°F
Dew Point
1°F
11 PM
11°F
0%
3mph
SE
Clear
Humidity
64%
Feels like
5°F
Dew Point
1°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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