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

23°C

73°F

Humidity 76%
Wind Speed Vrbl 7 km/h
Barometer 1009.7 mb (29.84 in)
Dewpoint 18°C (65°F)
Visibility 16 km
Last update 3 Jun 7:54 am CDT
Extended Forecast for

O'Fallon MO

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 31. South wind 5 to 10 km/h increasing to 13 to 18 km/h in the afternoon.

    High: 31 °C

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 19. Southeast wind 8 to 14 km/h.

    Low: 19 °C

    Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 28. South wind 11 to 16 km/h.

    High: 28 °C

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 10pm, then showers and thunderstorms likely between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 20. South wind 10 to 14 km/h. Chance of precipitation is 90%.

    Low: 20 °C

    T-storms

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 28. Northwest wind 13 to 16 km/h.

    High: 28 °C

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 17.

    Low: 17 °C

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 28.

    High: 28 °C

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 16.

    Low: 16 °C

    Clear

  • Friday

    Friday: Sunny, with a high near 28.

    High: 28 °C

    Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 31. South wind 5 to 10 km/h increasing to 13 to 18 km/h in the afternoon.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 19. Southeast wind 8 to 14 km/h.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 28. South wind 11 to 16 km/h.
Tuesday Night
Showers likely and possibly a thunderstorm before 10pm, then showers and thunderstorms likely between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 20. South wind 10 to 14 km/h. Chance of precipitation is 90%.
Wednesday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 28. Northwest wind 13 to 16 km/h.
Wednesday Night
Mostly clear, with a low around 17.
Thursday
Sunny, with a high near 28.
Thursday Night
Clear, with a low around 16.
Friday
Sunny, with a high near 28.
Friday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 17.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 27.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 17.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 27.
Click Map For Forecast
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Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
O'Fallon MO
 38.79°N 90.74°W (Elev. 597 m)
Last Update:
8:38 am CDT Jun 3, 2024
Forecast Valid:
8am CDT Jun 3, 2024-6pm CDT Jun 9, 2024
 
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