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

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: 4:06 am CST Dec 29, 2025 Latitude: 38.9089371 Longitude: -90.2142773 View on Google Maps

MouseOver for Detail Forecast
Overnight Monday Tuesday Wednesday New Year's Day Friday Saturday Sunday
Mostly Cloudy on Overnight Partly Sunny on Monday Increasing Clouds on Tuesday Partly Sunny on Wednesday Mostly Sunny on New Year's Day Mostly Cloudy on Friday Sunny on Saturday Mostly Sunny on Sunday
Low: 17°F High: 29°F High: 36°F High: 43°F High: 35°F High: 39°F High: 40°F High: 43°F
Low: 19°F Low: 28°F Low: 24°F Low: 22°F Low: 24°F Low: 23°F  
Mostly Cloudy Partly Sunny Increasing Clouds Partly Sunny Mostly Sunny Mostly Cloudy Sunny Mostly Sunny
-
Current Conditions at
ALTON - (KALN)
18°
Feels like 0°F
Cloudy
as of 4:35 AM CST
Rel. Humidity: 52%
Dew Point: 3°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
26 MPH
Gust: 37 MPH
300° Northwest
Cloud Level(s): Solid Overcast at 3400ft
Current Conditions at
ST LOUIS - (KSTL)
16°
Feels like -3°F
Mostly Cloudy
as of 3:51 AM CST
Rel. Humidity: 52%
Dew Point: 1°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
25 MPH
Gust: 41 MPH
300° Northwest
Cloud Level(s): Broken at 3700ft
Mostly Cloudy on Overnight Overnight... Mostly cloudy, with a low around 17. Breezy, with a west wind 26 to 28 mph, with gusts as high as 37 mph.

Partly Sunny on Monday Monday... Partly sunny, with a high near 29. Breezy, with a northwest wind 16 to 25 mph, with gusts as high as 36 mph.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 19. Northwest wind 9 to 16 mph.

Increasing Clouds on Tuesday Tuesday... Increasing clouds, with a high near 36. West wind 7 to 10 mph.

Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 28. West wind around 8 mph.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 43.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 24.

Mostly Sunny on New Year's Day New Year's Day... Mostly sunny, with a high near 35.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 22.

Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 39.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 24.

Sunny on Saturday Saturday... Sunny, with a high near 40.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 23.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 43.

Sun Almanac for Fairmont, Illinois
Sunrise: 07:19 AM
Sunset: 4:47 PM
Civil Sunrise:06:49 AM
Civil Sunset: 5:17 PM
Nautical Sunrise: 06:16 AM
Nautical Sunset: 5:51 PM
Astro Sunrise: 05:43 AM
Astro Sunset: 6:23 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.