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: 11:06 am CST Nov 28, 2025 Latitude: 38.9089371 Longitude: -90.2142773 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Saturday Sunday Monday Tuesday Wednesday Thursday
Increasing Clouds on This Afternoon 100% chance of snow on Tonight 100% chance of rain, snow, & sleet on Saturday Mostly Cloudy on Sunday 20% chance of snow on Monday Partly Sunny on Tuesday Partly Sunny on Wednesday Partly Sunny on Thursday
High: 39°F Low: 30°F High: 38°F High: 30°F High: 27°F High: 31°F High: 39°F High: 32°F
Low: 25°F Low: 15°F Low: 18°F Low: 20°F Low: 22°F  
Increasing Clouds Snow Rain, Snow, & Sleet Mostly Cloudy Snow Partly Sunny Partly Sunny Partly Sunny
-
Current Conditions at
ALTON - (KALN)
32°
Clear
as of 11:50 AM CST
Rel. Humidity: 50%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.47 in.
Flight Rule: VFR
Wind Data
7 MPH
280° West
Cloud Level(s): Clear
Current Conditions at
ST CHARLES - (KSET)
32°
Clear
as of 11:54 AM CST
Rel. Humidity: 46%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 30.48 in.
Flight Rule: VFR
Wind Data
3 MPH
260° West
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
34°
Mostly Cloudy
as of 11:51 AM CST
Rel. Humidity: 47%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.47 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Scattered at 15000ft, Broken at 25000ft
Current Conditions at
EAST ST LOUIS - (KCPS)
34°
Clear
as of 11:53 AM CST
Rel. Humidity: 47%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.47 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Increasing Clouds on This Afternoon This Afternoon... Increasing clouds, with a high near 39. West wind around 5 mph becoming calm.

100% chance of snow Tonight Tonight... Snow, mainly after 2am. Low around 30. Southeast wind 6 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

100% chance of rain, snow, & sleet Saturday Saturday... Snow, possibly mixed with rain and sleet before noon, then rain, possibly mixed with snow between noon and 4pm, then rain after 4pm. High near 38. Southeast wind 14 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 3 inches possible.

50% chance of rain Saturday Night Saturday Night... A 50 percent chance of rain before 9pm. Cloudy, with a low around 25. Breezy, with a south wind 15 to 20 mph becoming northwest after midnight. Winds could gust as high as 33 mph.

Mostly Cloudy on Sunday Sunday... Mostly cloudy, with a high near 30. Northwest wind 10 to 16 mph, with gusts as high as 25 mph.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 15.

20% chance of snow Monday Monday... A 20 percent chance of snow after noon. Mostly cloudy, with a high near 27.

30% chance of snow Monday Night Monday Night... A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 18.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 31.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 20.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 39.

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

Partly Sunny on Thursday Thursday... Partly sunny, with a high near 32.

Current Radar Image


Sun Almanac for Fairmont, Illinois
Sunrise: 06:58 AM
Sunset: 4:40 PM
Civil Sunrise:06:29 AM
Civil Sunset: 5:09 PM
Nautical Sunrise: 05:56 AM
Nautical Sunset: 5:42 PM
Astro Sunrise: 05:24 AM
Astro Sunset: 6:14 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.