Hourly Weather Forecast - Alton, IL

12 AM
30°F
0%
7mph
NNW
Partly Cloudy
Humidity
81%
Feels like
23°F
Dew Point
25°F
1 AM
29°F
0%
6mph
NNW
Mostly Clear
Humidity
80%
Feels like
22°F
Dew Point
23°F
2 AM
28°F
0%
6mph
NNW
Mostly Clear
Humidity
79%
Feels like
21°F
Dew Point
22°F
3 AM
26°F
0%
5mph
NNW
Mostly Clear
Humidity
79%
Feels like
20°F
Dew Point
21°F
4 AM
26°F
0%
5mph
N
Partly Cloudy
Humidity
78%
Feels like
20°F
Dew Point
20°F
5 AM
25°F
0%
4mph
N
Partly Cloudy
Humidity
78%
Feels like
19°F
Dew Point
19°F
6 AM
25°F
0%
4mph
NNE
Mostly Cloudy
Humidity
77%
Feels like
19°F
Dew Point
19°F
7 AM
25°F
0%
4mph
NNE
Cloudy
Humidity
75%
Feels like
20°F
Dew Point
18°F
7:10 AM
8 AM
26°F
0%
4mph
NNE
Cloudy
Humidity
72%
Feels like
21°F
Dew Point
18°F
9 AM
27°F
0%
4mph
NE
Cloudy
Humidity
69%
Feels like
23°F
Dew Point
19°F
10 AM
29°F
0%
4mph
NE
Partly Cloudy
Humidity
66%
Feels like
25°F
Dew Point
19°F
11 AM
30°F
10%
4mph
NE
Partly Cloudy
Humidity
63%
Feels like
26°F
Dew Point
19°F
12 PM
31°F
10%
4mph
NNE
Partly Cloudy
Humidity
62%
Feels like
27°F
Dew Point
19°F
1 PM
31°F
10%
4mph
NNE
Partly Cloudy
Humidity
61%
Feels like
27°F
Dew Point
20°F
2 PM
32°F
10%
4mph
NNE
Partly Cloudy
Humidity
62%
Feels like
28°F
Dew Point
20°F
3 PM
31°F
10%
4mph
NNE
Partly Cloudy
Humidity
63%
Feels like
27°F
Dew Point
20°F
4 PM
31°F
10%
5mph
NNE
Mostly Sunny
Humidity
66%
Feels like
25°F
Dew Point
20°F
4:39 PM
5 PM
30°F
10%
6mph
N
Partly Cloudy
Humidity
67%
Feels like
24°F
Dew Point
20°F
6 PM
29°F
10%
7mph
N
Cloudy
Humidity
68%
Feels like
22°F
Dew Point
20°F
7 PM
28°F
10%
7mph
N
Cloudy
Humidity
69%
Feels like
21°F
Dew Point
19°F
8 PM
26°F
10%
7mph
N
Cloudy
Humidity
70%
Feels like
19°F
Dew Point
18°F
9 PM
25°F
10%
7mph
N
Cloudy
Humidity
71%
Feels like
17°F
Dew Point
17°F
10 PM
24°F
10%
7mph
N
Cloudy
Humidity
71%
Feels like
15°F
Dew Point
15°F
11 PM
22°F
10%
8mph
N
Cloudy
Humidity
70%
Feels like
13°F
Dew Point
14°F

Rainfall Forecast for Northwest through Thursday

Heavy Rain, Flooding Soaks The Northwest

A fast-moving series of atmospheric rivers continue to drench the Pacific Northwest today through Thursday.

Snow and ice forecast through Thursday A.M.

Snow Barrels Across the Northern U.S.

Today's Weather Outlook

Today's Weather Outlook

Weekly Drought Map for December 4, 2025

Active Week of Weather Leads to Mixed Drought Results

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

Cold Air Damming - Cause And Effects

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

Safety Tips For Icy Surfaces

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

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Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide