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

Hazardous Weather Conditions

Current conditions at

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

67°F

19°C

Humidity 73%
Wind Speed SW 14 G 21 mph
Barometer 29.92 in (1012.8 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 16 Apr 9:54 am CDT
Extended Forecast for

2 Miles NW O'Fallon MO

  • Today

    Today: Sunny, with a high near 82. West wind around 7 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 61. South wind 3 to 5 mph.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. South wind 6 to 14 mph, with gusts as high as 25 mph.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms before 4am, then showers and possibly a thunderstorm after 4am. Low around 48. South wind 11 to 14 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%.

    Low: 48 °F

    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms. Mostly sunny, with a high near 60. Northwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    High: 60 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 42.

    Low: 42 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 82. West wind around 7 mph.
Tonight
Mostly clear, with a low around 61. South wind 3 to 5 mph.
Friday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. South wind 6 to 14 mph, with gusts as high as 25 mph.
Friday Night
Showers and thunderstorms before 4am, then showers and possibly a thunderstorm after 4am. Low around 48. South wind 11 to 14 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 60. Northwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Sunny, with a high near 65.
Sunday Night
Clear, with a low around 42.
Monday
Sunny, with a high near 72.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
A 20 percent chance of showers. Mostly clear, with a low around 55.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 79.
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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:
9:01 am CDT Apr 16, 2026
Forecast Valid:
9am CDT Apr 16, 2026-6pm CDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

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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