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Sunset:  5:15 pm
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January 25th, 2026 :: 12:10 am CST   

Local Weather Report for
Altamont
Illinois, United States

 Altamont Weather Forecast Summary  
 
Today
Jan 25th
Monday
Jan 26th
Tuesday
Jan 27th
Wednesday
Jan 28th
Thursday
Jan 29th
Flurries Mostly Sunny Cloudy Cloudy Cloudy
16°F
15°F
-2°F
30°F
7°F
23°F
7°F
22°F
5°F
 
 Altamont Detailed Weather Forecast  
 
Sunday, January 25th, 2026
Overnight Temperature: 11°F
Cloudy with a chance of flurries. Windy at times.
Morning Temperature: 14°F
Cloudy with flurries likely. Windy at times.
Afternoon Temperature: 14°F
Cloudy with a chance of flurries. Windy at times.
Evening Temperature: 9°F
Cloudy. Windy at times.
Monday, January 26th, 2026
Overnight Temperature: -1°F
Clear. Windy at times.
Morning Temperature: 9°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 3°F
Sunny.
Evening Temperature: 4°F
Clear. Windy at times.
Tuesday, January 27th, 2026
Overnight Temperature: 10°F
Clear. Windy at times.
Morning Temperature: 24°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 17°F
Mostly sunny.
Evening Temperature: 15°F
Cloudy.
Wednesday, January 28th, 2026
Overnight Temperature: 17°F
Cloudy.
Morning Temperature: 20°F
Cloudy. Windy at times.
Afternoon Temperature: 18°F
Cloudy.
Evening Temperature: 10°F
Clear with cloudy periods.
Thursday, January 29th, 2026
Overnight Temperature: 5°F
Clear.
Morning Temperature: 16°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 12°F
Cloudy.
Evening Temperature: 7°F
Cloudy.
Friday, January 30th, 2026
Overnight Temperature: 5°F
Cloudy.
Morning Temperature: 18°F
Cloudy.
Afternoon Temperature: 18°F
Cloudy.
Evening Temperature: 17°F
Cloudy.
Saturday, January 31st, 2026
Overnight Temperature: 17°F
Cloudy with clear periods with a slight chance of flurries.
Morning Temperature: 25°F
Cloudy.
Afternoon Temperature: 25°F
A mix of cloud and sun.
Evening Temperature: 22°F
Cloudy with a slight chance of flurries. Windy at times.
Sunday, February 1st, 2026
Overnight Temperature: 12°F
Clear.
Morning Temperature: 23°F
Cloudy.
Afternoon Temperature: 17°F
A mix of cloud and sun.
Evening Temperature: 12°F
A mix of cloudy and clear skies.





 

  [ Local Weather Report ]
West Alton, MO 
 
Portage Des Sioux, MO 
10:54 PM  9°F
light snow
 
Wood River, IL 
10:55 PM  10°F
moderate snow
 
Roxana, IL 
10:55 PM  10°F
moderate snow
 
Black Jack, MO 
10:51 PM  9°F
light snow mist
 
Alton, IL 
10:55 PM  10°F
moderate snow
 
Florissant, MO 
10:51 PM  9°F
light snow mist
 
St Charles, MO 
10:54 PM  9°F
light snow
 
Bellefontaine Neighbors, MO 
 
Calverton Park, MO 
10:51 PM  9°F
light snow mist

 
This WeatherCity Weather Forecast for Altamont, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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