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

58°F

14°C

Humidity 97%
Wind Speed Calm
Barometer 30.12 in (1019.4 mb)
Dewpoint 57°F (14°C)
Visibility 9.00 mi
Last update 11 Sep 4:54 am CDT
Extended Forecast for

2 Miles NNE O'Fallon MO

  • Today

    Today: Sunny, with a high near 90. Light and variable wind.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 63. Light southeast wind.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 94. Calm wind becoming south 5 to 7 mph in the morning.

    High: 94 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 69. Southeast wind around 6 mph.

    Low: 69 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 96. Southwest wind 3 to 6 mph.

    High: 96 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Sunday

    Sunday: Isolated showers and thunderstorms after 1pm. Partly sunny, with a high near 95. Chance of precipitation is 20%.

    High: 95 °F

    Partly Sunny
    then Isolated
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 70.

    Low: 70 °F

    Mostly Cloudy

  • Monday

    Monday: Isolated showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Chance of precipitation is 20%.

    High: 93 °F

    Mostly Sunny
    then Isolated
    T-storms

Detailed Forecast

Today
Sunny, with a high near 90. Light and variable wind.
Tonight
Mostly clear, with a low around 63. Light southeast wind.
Friday
Sunny, with a high near 94. Calm wind becoming south 5 to 7 mph in the morning.
Friday Night
Partly cloudy, with a low around 69. Southeast wind around 6 mph.
Saturday
Sunny, with a high near 96. Southwest wind 3 to 6 mph.
Saturday Night
Partly cloudy, with a low around 70.
Sunday
Isolated showers and thunderstorms after 1pm. Partly sunny, with a high near 95. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 70.
Monday
Isolated showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 68.
Tuesday
Isolated showers and thunderstorms. Sunny, with a high near 94. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 67.
Wednesday
Isolated showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE O'Fallon MO
 38.81°N 90.71°W (Elev. 502 ft)
Last Update:
4:36 am CDT Sep 11, 2025
Forecast Valid:
5am CDT Sep 11, 2025-6pm CDT Sep 17, 2025
 
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