url:
Altamont, Illinois Weather Forecast
Altamont, Illinois Weather
your sport, your way
Air Sports Net on FacebookAir Sports Net on Google +Air Sports Net on TwitterReceive RSS UpdatesReceive Email Updates

No Watches or Warnings for Altamont
Change location by the zip code or city,state: or search for other weather forecast locations in Illinois by name.
Weather Forecast for Altamont, Illinois : Madison County
Issued: 7:46 pm CST Dec 21, 2025 Latitude: 38.9231036 Longitude: -90.2098327 View on Google Maps

MouseOver for Detail Forecast
Tonight Monday Tuesday Wednesday Christmas Day Friday Saturday Sunday
Cloudy on Tonight Increasing Clouds on Monday Sunny on Tuesday Mostly Cloudy on Wednesday Partly Sunny on Christmas Day Sunny on Friday Mostly Cloudy on Saturday Sunny on Sunday
Low: 28°F High: 53°F High: 62°F High: 70°F High: 74°F High: 65°F High: 60°F High: 41°F
Low: 43°F Low: 47°F Low: 57°F Low: 54°F Low: 45°F Low: 31°F  
Cloudy Increasing Clouds Sunny Mostly Cloudy Partly Sunny Sunny Mostly Cloudy Sunny
-
Current Conditions at
ALTON - (KALN)
28°
Clear
as of 7:50 PM CST
Rel. Humidity: 74%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.44 in.
Flight Rule: VFR
Wind Data
7 MPH
120° Southeast
Cloud Level(s): Clear
Current Conditions at
ST CHARLES - (KSET)
30°
Feels like 21°F
Clear
as of 7:54 PM CST
Rel. Humidity: 80%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.42 in.
Flight Rule: VFR
Wind Data
10 MPH
100° East
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
34°
Mostly Cloudy
as of 7:51 PM CST
Rel. Humidity: 55%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.43 in.
Flight Rule: VFR
Wind Data
8 MPH
120° Southeast
Cloud Level(s): Broken at 25000ft
Current Conditions at
EAST ST LOUIS - (KCPS)
27°
Clear
as of 7:53 PM CST
Rel. Humidity: 79%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.44 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Cloudy on Tonight Tonight... Partly cloudy, with a low around 28. Southeast wind 6 to 8 mph.
Increasing Clouds on Monday Monday... Increasing clouds, with a high near 53. South wind 8 to 11 mph.
Mostly Clear on Monday Night Monday Night... Mostly cloudy during the early evening, then becoming mostly clear, with a low around 43. South wind 6 to 9 mph.
Sunny on Tuesday Tuesday... Sunny, with a high near 62. Southwest wind around 6 mph becoming light and variable in the afternoon.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 47. Light and variable wind becoming southeast 5 to 7 mph in the evening.
Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 70.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 57.
Partly Sunny on Christmas Day Christmas Day... Partly sunny, with a high near 74.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 54.
Sunny on Friday Friday... Sunny, with a high near 65.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 45.
Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 60.
20% chance of rain Saturday Night Saturday Night... A 20 percent chance of rain. Mostly cloudy, with a low around 31.
Sunny on Sunday Sunday... Sunny, with a high near 41.
Current Radar Image


Sun Almanac for Altamont, Illinois
Sunrise: 07:16 AM
Sunset: 4:42 PM
Civil Sunrise:06:46 AM
Civil Sunset: 5:12 PM
Nautical Sunrise: 06:13 AM
Nautical Sunset: 5:46 PM
Astro Sunrise: 05:40 AM
Astro Sunset: 6:18 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.