Hourly Weather Forecast - Alton, MO

12 AM
21°F
10%
4mph
E
Clear
Humidity
54%
Feels like
16°F
Dew Point
7°F
1 AM
21°F
10%
4mph
E
Clear
Humidity
55%
Feels like
16°F
Dew Point
7°F
2 AM
21°F
10%
3mph
E
Clear
Humidity
55%
Feels like
16°F
Dew Point
7°F
3 AM
20°F
10%
3mph
E
Clear
Humidity
55%
Feels like
16°F
Dew Point
7°F
4 AM
20°F
10%
3mph
ESE
Clear
Humidity
57%
Feels like
16°F
Dew Point
7°F
5 AM
20°F
10%
3mph
ESE
Clear
Humidity
58%
Feels like
20°F
Dew Point
8°F
6 AM
20°F
10%
3mph
ESE
Clear
Humidity
59%
Feels like
20°F
Dew Point
8°F
7 AM
21°F
10%
3mph
SE
Mostly Clear
Humidity
57%
Feels like
17°F
Dew Point
9°F
7:10 AM
8 AM
23°F
10%
3mph
SE
Partly Cloudy
Humidity
55%
Feels like
19°F
Dew Point
9°F
9 AM
25°F
10%
4mph
SE
Partly Cloudy
Humidity
52%
Feels like
20°F
Dew Point
10°F
10 AM
28°F
10%
4mph
SSE
Mostly Cloudy
Humidity
48%
Feels like
24°F
Dew Point
11°F
11 AM
32°F
10%
5mph
S
Mostly Cloudy
Humidity
43%
Feels like
27°F
Dew Point
13°F
12 PM
35°F
10%
6mph
S
Mostly Cloudy
Humidity
40%
Feels like
30°F
Dew Point
14°F
1 PM
37°F
10%
6mph
S
Mostly Cloudy
Humidity
39%
Feels like
33°F
Dew Point
15°F
2 PM
39°F
10%
5mph
S
Mostly Cloudy
Humidity
39%
Feels like
35°F
Dew Point
16°F
3 PM
39°F
10%
5mph
S
Cloudy
Humidity
40%
Feels like
36°F
Dew Point
17°F
4 PM
38°F
10%
4mph
S
Cloudy
Humidity
45%
Feels like
35°F
Dew Point
19°F

Snow and ice forecast through Thursday A.M.

Snow Barrels Across the Northern U.S.

Low pressure will produce a swath of snow from Minnesota to Maine into Thursday.

Rainfall Forecast for Northwest through Thursday

Heavy Rain, Flooding Soaks The Northwest

Wednesday's Weather Outlook

Wednesday'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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