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.

Light Snow and Breezy

38°F

3°C

Humidity 48%
Wind Speed NW 24 G 38 mph
Barometer 30.25 in (1024.6 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 9 Nov 11:53 am CST
Extended Forecast for

5 Miles N O'Fallon IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 39. Breezy, with a northwest wind 17 to 22 mph, with gusts as high as 33 mph.

    High: 39 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Scattered flurries between midnight and 3am. Partly cloudy, with a low around 24. Northwest wind 14 to 16 mph, with gusts as high as 26 mph.

    Low: 24 °F

    Scattered
    Flurries

  • Monday

    Monday: Sunny, with a high near 40. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.

    High: 40 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 25. Northwest wind 5 to 8 mph becoming light and variable.

    Low: 25 °F

    Increasing
    Clouds

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 53. South wind 9 to 17 mph, with gusts as high as 26 mph.

    High: 53 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 39. Breezy, with a northwest wind 17 to 22 mph, with gusts as high as 33 mph.
Tonight
Scattered flurries between midnight and 3am. Partly cloudy, with a low around 24. Northwest wind 14 to 16 mph, with gusts as high as 26 mph.
Monday
Sunny, with a high near 40. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.
Monday Night
Increasing clouds, with a low around 25. Northwest wind 5 to 8 mph becoming light and variable.
Veterans Day
Partly sunny, with a high near 53. South wind 9 to 17 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly clear, with a low around 41.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 70.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Mostly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles N O'Fallon IL
 38.66°N 89.92°W (Elev. 551 ft)
Last Update:
11:21 am CST Nov 9, 2025
Forecast Valid:
12pm CST Nov 9, 2025-6pm CST Nov 15, 2025
 
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Additional Resources

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Chance of Precipitation