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.

Overcast

43°F

6°C

Humidity 80%
Wind Speed W 6 mph
Barometer 30.08 in (1018.6 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 7 Mar 10:54 pm CDT
Extended Forecast for

2 Miles NW O'Fallon MO

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 37. West wind 3 to 6 mph.

    Low: 37 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 67. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 46. Southwest wind 6 to 8 mph.

    Low: 46 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 77. Southwest wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60. South wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms before 9am, then a slight chance of showers between 9am and noon, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 81. Chance of precipitation is 60%.

    High: 81 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 48. Chance of precipitation is 90%.

    Low: 48 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before noon, then a chance of showers. High near 64. Chance of precipitation is 90%.

    High: 64 °F

    Showers then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before midnight. Mostly clear, with a low around 32.

    Low: 32 °F

    Slight Chance
    Showers then
    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 37. West wind 3 to 6 mph.
Sunday
Sunny, with a high near 67. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Clear, with a low around 46. Southwest wind 6 to 8 mph.
Monday
Sunny, with a high near 77. Southwest wind 8 to 14 mph, with gusts as high as 23 mph.
Monday Night
Mostly clear, with a low around 60. South wind 7 to 10 mph, with gusts as high as 20 mph.
Tuesday
A slight chance of showers and thunderstorms before 9am, then a slight chance of showers between 9am and noon, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 81. Chance of precipitation is 60%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 48. Chance of precipitation is 90%.
Wednesday
Showers and possibly a thunderstorm before noon, then a chance of showers. High near 64. Chance of precipitation is 90%.
Wednesday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 32.
Thursday
Sunny, with a high near 53.
Thursday Night
Mostly cloudy, with a low around 42.
Friday
Partly sunny, with a high near 67.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
Mostly cloudy, with a high near 56.
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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:
9:21 pm CST Mar 7, 2026
Forecast Valid:
10pm CST Mar 7, 2026-6pm CDT Mar 14, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation