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

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

77°F

25°C

Humidity 50%
Wind Speed Vrbl 5 mph
Barometer 29.94 in (1013.3 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 13 Oct 8:53 am CDT
Extended Forecast for

3 Miles NNE Fairmont City IL

  • Today

    Today: Sunny, with a high near 95. Heat index values as high as 100. Southwest wind around 9 mph.

    High: 95 °F

    Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 3am. Increasing clouds, with a low around 73. South wind 5 to 8 mph becoming west after midnight.

    Low: 73 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm, mainly before 2pm, then a chance of showers and thunderstorms after 2pm. Some of the storms could produce heavy rainfall. High near 83. Calm wind becoming west around 6 mph. Chance of precipitation is 100%.

    High: 83 °F

    Heavy Rain

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm, mainly after 1am. Mostly cloudy, with a low around 68. Light northeast wind. Chance of precipitation is 70%.

    Low: 68 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 84. East wind 5 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 90%.

    High: 84 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. Chance of precipitation is 50%.

    Low: 52 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 64. Breezy.

    High: 64 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 95. Heat index values as high as 100. Southwest wind around 9 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 3am. Increasing clouds, with a low around 73. South wind 5 to 8 mph becoming west after midnight.
Wednesday
Showers and possibly a thunderstorm, mainly before 2pm, then a chance of showers and thunderstorms after 2pm. Some of the storms could produce heavy rainfall. High near 83. Calm wind becoming west around 6 mph. Chance of precipitation is 100%.
Wednesday Night
Showers likely and possibly a thunderstorm, mainly after 1am. Mostly cloudy, with a low around 68. Light northeast wind. Chance of precipitation is 70%.
Thursday
Showers and possibly a thunderstorm. High near 84. East wind 5 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 90%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. Chance of precipitation is 50%.
Friday
Mostly sunny, with a high near 64. Breezy.
Friday Night
Mostly clear, with a low around 40.
Saturday
Sunny, with a high near 64.
Saturday Night
Clear, with a low around 39.
Sunday
Sunny, with a high near 72.
Sunday Night
Partly cloudy, with a low around 48.
Monday
Mostly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Fairmont City IL
 38.68°N 90.09°W (Elev. 404 ft)
Last Update:
9:21 am CDT Oct 13, 2026
Forecast Valid:
9am CDT Oct 13, 2026-6pm CDT Oct 19, 2026
 
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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