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

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

60°F

16°C

Humidity 56%
Wind Speed SW 14 G 22 mph
Barometer 29.98 in (1014.7 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 5 Nov 2:54 am CST
Extended Forecast for

O'Fallon MO

  • Overnight

    Overnight: Partly cloudy, with a low around 53. Southwest wind around 10 mph, with gusts as high as 22 mph.

    Low: 53 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 71. Southwest wind 8 to 14 mph becoming north in the afternoon. Winds could gust as high as 24 mph.

    High: 71 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 36. North wind around 6 mph becoming calm in the evening.

    Low: 36 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 65. Light southeast wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 22 mph.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 55. Southeast wind around 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday

    Friday: A 20 percent chance of rain before noon. Mostly sunny, with a high near 71.

    High: 71 °F

    Slight Chance
    Rain then
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before midnight. Partly cloudy, with a low around 35.

    Low: 35 °F

    Slight Chance
    Rain then
    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 53. Southwest wind around 10 mph, with gusts as high as 22 mph.
Wednesday
Sunny, with a high near 71. Southwest wind 8 to 14 mph becoming north in the afternoon. Winds could gust as high as 24 mph.
Wednesday Night
Clear, with a low around 36. North wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 65. Light southeast wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 22 mph.
Thursday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 55. Southeast wind around 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Friday
A 20 percent chance of rain before noon. Mostly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 42.
Saturday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 66.
Saturday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 35.
Sunday
Mostly sunny, with a high near 44.
Sunday Night
Mostly clear, with a low around 24.
Monday
Sunny, with a high near 44.
Monday Night
Mostly clear, with a low around 28.
Veterans Day
Mostly sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
O'Fallon MO
 38.81°N 90.71°W (Elev. 502 ft)
Last Update:
12:41 am CST Nov 5, 2025
Forecast Valid:
3am CST Nov 5, 2025-6pm CST Nov 11, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation