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

18°F

-8°C

Humidity 74%
Wind Speed Calm
Barometer 30.33 in (1028.3 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Last update 23 Feb 10:54 pm CST
Extended Forecast for

2 Miles NW O'Fallon MO

  • Tonight

    Tonight: Increasing clouds, with a low around 21. Calm wind becoming south 5 to 8 mph after midnight.

    Low: 21 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 57. Southwest wind 9 to 16 mph, with gusts as high as 29 mph.

    High: 57 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34. Southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 52. Calm wind becoming north around 5 mph in the afternoon.

    High: 52 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after midnight. Mostly cloudy, with a low around 37. East wind 5 to 7 mph. Chance of precipitation is 60%.

    Low: 37 °F

    Chance Rain
    then Rain
    Likely

  • Thursday

    Thursday: A 20 percent chance of rain before noon. Partly sunny, with a high near 50.

    High: 50 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Friday Night

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

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 21. Calm wind becoming south 5 to 8 mph after midnight.
Tuesday
Partly sunny, with a high near 57. Southwest wind 9 to 16 mph, with gusts as high as 29 mph.
Tuesday Night
Mostly cloudy, with a low around 34. Southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.
Wednesday
Partly sunny, with a high near 52. Calm wind becoming north around 5 mph in the afternoon.
Wednesday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 37. East wind 5 to 7 mph. Chance of precipitation is 60%.
Thursday
A 20 percent chance of rain before noon. Partly sunny, with a high near 50.
Thursday Night
Mostly clear, with a low around 33.
Friday
Sunny, with a high near 65.
Friday Night
Mostly clear, with a low around 41.
Saturday
Sunny, with a high near 66.
Saturday Night
Mostly cloudy, with a low around 32.
Sunday
A chance of rain and snow. Partly sunny, with a high near 47. Chance of precipitation is 40%.
Sunday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 31.
Monday
A 30 percent chance of rain. Mostly cloudy, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW O'Fallon MO
 38.81°N 90.74°W (Elev. 499 ft)
Last Update:
11:06 pm CST Feb 23, 2026
Forecast Valid:
11pm CST Feb 23, 2026-6pm CST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation