National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

69°F

21°C

Humidity 87%
Wind Speed SE 8 mph
Barometer 29.99 in (1015.3 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 20 Sep 9:53 pm CDT
Extended Forecast for

Fairmont City IL

  • Tonight

    Tonight: Isolated showers and thunderstorms. Mostly cloudy, with a low around 66. Light south wind. Chance of precipitation is 20%.

    Low: 66 °F

    Isolated
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms, mainly after 10am. Partly sunny, with a high near 86. Southwest wind 3 to 8 mph.

    High: 86 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms. Low around 66. South wind 5 to 7 mph. Chance of precipitation is 80%.

    Low: 66 °F

    T-storms

  • Monday

    Monday: Showers and thunderstorms before 8am, then showers and possibly a thunderstorm, mainly after 8am. High near 83. South wind 6 to 9 mph. Chance of precipitation is 80%.

    High: 83 °F

    T-storms then
    Showers

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind around 6 mph becoming calm in the evening.

    Low: 65 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.

    High: 79 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.

    High: 77 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    Showers

Detailed Forecast

Tonight
Isolated showers and thunderstorms. Mostly cloudy, with a low around 66. Light south wind. Chance of precipitation is 20%.
Sunday
A 50 percent chance of showers and thunderstorms, mainly after 10am. Partly sunny, with a high near 86. Southwest wind 3 to 8 mph.
Sunday Night
Showers and thunderstorms. Low around 66. South wind 5 to 7 mph. Chance of precipitation is 80%.
Monday
Showers and thunderstorms before 8am, then showers and possibly a thunderstorm, mainly after 8am. High near 83. South wind 6 to 9 mph. Chance of precipitation is 80%.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind around 6 mph becoming calm in the evening.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76. Chance of precipitation is 50%.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 58.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 58.
Saturday
Sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fairmont City IL
 38.66°N 90.09°W (Elev. 410 ft)
Last Update:
10:16 pm CDT Sep 20, 2025
Forecast Valid:
11pm CDT Sep 20, 2025-6pm CDT Sep 27, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation