url:
Fairmont, Illinois Weather Forecast
Fairmont, 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 Fairmont
Change location by the zip code or city,state: or search for other weather forecast locations in Illinois by name.
Weather Forecast for Fairmont, Illinois : Madison County
Issued: 5:41 am CST Dec 12, 2025 Latitude: 38.9089371 Longitude: -90.2142773 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Saturday Sunday Monday Tuesday Wednesday Thursday
Cloudy on Today Mostly Cloudy on Tonight 30% chance of snow on Saturday Sunny on Sunday Sunny on Monday Mostly Sunny on Tuesday Partly Sunny on Wednesday 30% chance of rain on Thursday
High: 36°F Low: 21°F High: 27°F High: 14°F High: 39°F High: 50°F High: 57°F High: 56°F
Low: 3 °F Low: 6°F Low: 25°F Low: 36°F Low: 45°F  
Cloudy Mostly Cloudy Snow Sunny Sunny Mostly Sunny Partly Sunny Rain
-
Current Conditions at
ALTON - (KALN)
32°
Cloudy
as of 6:35 AM CST
Rel. Humidity: 86%
Dew Point: 28°F
Visibility: 7 Miles
Pressure: 30.05 in.
Flight Rule: IFR
Wind Data
5 MPH
0° North
Cloud Level(s): Solid Overcast at 700ft
Current Conditions at
ST CHARLES - (KSET)
32°
Feels like 23°F
Cloudy
as of 5:54 AM CST
Rel. Humidity: 86%
Dew Point: 28°F
Visibility: 8 Miles
Pressure: 30.03 in.
Flight Rule: IFR
Wind Data
12 MPH
010° North
Cloud Level(s): Solid Overcast at 700ft
Current Conditions at
ST LOUIS - (KSTL)
34°
Cloudy
as of 5:51 AM CST
Rel. Humidity: 86%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: IFR
Wind Data
7 MPH
060° Northeast
Cloud Level(s): Solid Overcast at 700ft
Current Conditions at
EAST ST LOUIS - (KCPS)
34°
Cloudy
as of 5:53 AM CST
Rel. Humidity: 86%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: IFR
Wind Data
8 MPH
040° Northeast
Cloud Level(s): Solid Overcast at 900ft
Cloudy on Today Today... Cloudy, with a high near 36. Northwest wind 7 to 9 mph.
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 21. Northwest wind 6 to 8 mph.
30% chance of snow Saturday Saturday... A 30 percent chance of snow, mainly after 11am. Cloudy, with a high near 27. North wind 6 to 10 mph.
20% chance of snow Saturday Night Saturday Night... A 20 percent chance of snow before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 3. Wind chill values as low as -10. North wind 10 to 13 mph.
Sunny on Sunday Sunday... Sunny and cold, with a high near 14. Northwest wind 5 to 10 mph.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 6.
Sunny on Monday Monday... Sunny, with a high near 39.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 25.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 50.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 36.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 57.
30% chance of rain Wednesday Night Wednesday Night... A 30 percent chance of rain. Mostly cloudy, with a low around 45.
30% chance of rain Thursday Thursday... A 30 percent chance of rain. Partly sunny, with a high near 56.
Current Radar Image


Sun Almanac for Fairmont, Illinois
Sunrise: 07:11 AM
Sunset: 4:39 PM
Civil Sunrise:06:41 AM
Civil Sunset: 5:09 PM
Nautical Sunrise: 06:07 AM
Nautical Sunset: 5:42 PM
Astro Sunrise: 05:35 AM
Astro Sunset: 6:15 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.