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: 11:16 pm CST Jan 20, 2026 Latitude: 38.9089371 Longitude: -90.2142773 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Cloudy on Overnight Clearing on Wednesday Partly Sunny on Thursday Mostly Cloudy on Friday 40% chance of snow on Saturday Partly Sunny on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday
Low: 29°F High: 42°F High: 37°F High: 14°F High: 14°F High: 22°F High: 25°F High: 36°F
Low: 24°F Low: 9 °F Low: 2°F Low: 8°F Low: 6°F Low: 12°F  
Cloudy Clearing Partly Sunny Mostly Cloudy Snow Partly Sunny Mostly Sunny Mostly Sunny
-
Current Conditions at
ST CHARLES - (KSET)
34°
Clear
as of 11:54 PM CST
Rel. Humidity: 31%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 30.14 in.
Flight Rule: VFR
Wind Data
8 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
34°
Cloudy
as of 11:51 PM CST
Rel. Humidity: 31%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
8 MPH
210° Southwest
Cloud Level(s): Scattered at 18000ft, Solid Overcast at 22000ft
Current Conditions at
EAST ST LOUIS - (KCPS)
36°
Feels like 28°F
Clear
as of 11:53 PM CST
Rel. Humidity: 29%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 30.14 in.
Flight Rule: VFR
Wind Data
10 MPH
Gust: 22 MPH
210° Southwest
Cloud Level(s): Clear
Cloudy on Overnight Overnight... Cloudy, with a low around 29. South wind around 10 mph, with gusts as high as 20 mph.
Clearing on Wednesday Wednesday... Mostly cloudy through mid morning, then gradual clearing, with a high near 42. West wind 10 to 14 mph, with gusts as high as 22 mph.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 24. Southwest wind 7 to 11 mph becoming northwest after midnight. Winds could gust as high as 23 mph.
Partly Sunny on Thursday Thursday... Partly sunny, with a high near 37. Northwest wind around 6 mph.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 9. Light north wind increasing to 9 to 14 mph in the evening. Winds could gust as high as 21 mph.
Mostly Cloudy on Friday Friday... Mostly cloudy and cold, with a high near 14.
20% chance of snow Friday Night Friday Night... A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 2.
40% chance of snow Saturday Saturday... A 40 percent chance of snow, mainly after noon. Cloudy and cold, with a high near 14.
30% chance of snow Saturday Night Saturday Night... A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 8.
Partly Sunny on Sunday Sunday... Partly sunny, with a high near 22.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 6.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 25.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 12.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 36.
Current Radar Image


Sun Almanac for Fairmont, Illinois
Sunrise: 07:15 AM
Sunset: 5:09 PM
Civil Sunrise:06:46 AM
Civil Sunset: 5:38 PM
Nautical Sunrise: 06:14 AM
Nautical Sunset: 6:11 PM
Astro Sunrise: 05:42 AM
Astro Sunset: 6:43 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.