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.

Fog/Mist

46°F

8°C

Humidity 93%
Wind Speed Calm
Barometer 30.08 in (1018.9 mb)
Dewpoint 44°F (7°C)
Visibility 6.00 mi
Last update 4 Mar 2:54 am CST
Extended Forecast for

2 Miles NW O'Fallon MO

  • Overnight

    Overnight: Showers likely and possibly a thunderstorm before 4am, then a chance of showers and thunderstorms after 4am. Patchy fog after 5am. Otherwise, cloudy, with a low around 47. Northeast wind around 5 mph becoming calm. Chance of precipitation is 60%.

    Low: 47 °F

    Showers
    Likely and
    Patchy Fog

  • Wednesday

    Wednesday: Showers and thunderstorms before 4pm, then showers likely. Patchy fog before 11am. High near 60. Calm wind becoming east around 5 mph. Chance of precipitation is 90%.

    High: 60 °F

    Showers
    Likely and
    Patchy Fog
    then Showers

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 5am, then a chance of showers and thunderstorms after 5am. Patchy fog after 1am. Low around 51. Light and variable wind becoming west around 6 mph in the evening. Chance of precipitation is 80%.

    Low: 51 °F

    T-storms
    Likely then
    Showers and
    Patchy Fog

  • Thursday

    Thursday: A 40 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 67. West wind 5 to 8 mph becoming light and variable in the afternoon.

    High: 67 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and 3am, then a chance of showers after 3am. Mostly cloudy, with a low around 57. Calm wind becoming south 5 to 9 mph in the evening. Chance of precipitation is 50%.

    Low: 57 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers. Partly sunny, with a high near 79.

    High: 79 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 52. Chance of precipitation is 90%.

    Low: 52 °F

    Showers
    Likely then
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers before noon. Partly sunny, with a high near 63.

    High: 63 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm before 4am, then a chance of showers and thunderstorms after 4am. Patchy fog after 5am. Otherwise, cloudy, with a low around 47. Northeast wind around 5 mph becoming calm. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms before 4pm, then showers likely. Patchy fog before 11am. High near 60. Calm wind becoming east around 5 mph. Chance of precipitation is 90%.
Wednesday Night
Showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 5am, then a chance of showers and thunderstorms after 5am. Patchy fog after 1am. Low around 51. Light and variable wind becoming west around 6 mph in the evening. Chance of precipitation is 80%.
Thursday
A 40 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 67. West wind 5 to 8 mph becoming light and variable in the afternoon.
Thursday Night
A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and 3am, then a chance of showers after 3am. Mostly cloudy, with a low around 57. Calm wind becoming south 5 to 9 mph in the evening. Chance of precipitation is 50%.
Friday
A 50 percent chance of showers. Partly sunny, with a high near 79.
Friday Night
Showers and possibly a thunderstorm. Low around 52. Chance of precipitation is 90%.
Saturday
A 40 percent chance of showers before noon. Partly sunny, with a high near 63.
Saturday Night
Partly cloudy, with a low around 40.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 48.
Monday
Sunny, with a high near 78.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly clear, with a low around 60.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW O'Fallon MO
 38.81°N 90.74°W (Elev. 499 ft)
Last Update:
12:51 am CST Mar 4, 2026
Forecast Valid:
3am CST Mar 4, 2026-6pm CDT Mar 10, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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