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

41°F

5°C

Humidity 79%
Wind Speed Calm
Barometer 29.59 in (1002.0 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 19 Feb 12:54 am CST
Extended Forecast for

2 Miles NW O'Fallon MO

  • Overnight

    Overnight: Mostly cloudy, with a low around 46. Light south wind.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 70. Light and variable wind becoming southwest 9 to 14 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 60%.

    High: 70 °F

    T-storms
    Likely then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 34. Breezy, with a west wind 10 to 20 mph, with gusts as high as 33 mph.

    Low: 34 °F

    Mostly Clear
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Sunny, with a high near 48. West wind 12 to 17 mph decreasing to 6 to 11 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 48 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 29. North wind 3 to 6 mph.

    Low: 29 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of snow after noon, mixing with rain after 3pm. Mostly sunny, with a high near 45. Chance of precipitation is 20%.

    High: 45 °F

    Mostly Sunny
    then Slight
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 38.

    High: 38 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 18.

    Low: 18 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 46. Light south wind.
Thursday
Showers and thunderstorms likely, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 70. Light and variable wind becoming southwest 9 to 14 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 60%.
Thursday Night
Partly cloudy, with a low around 34. Breezy, with a west wind 10 to 20 mph, with gusts as high as 33 mph.
Friday
Sunny, with a high near 48. West wind 12 to 17 mph decreasing to 6 to 11 mph in the afternoon. Winds could gust as high as 28 mph.
Friday Night
Partly cloudy, with a low around 29. North wind 3 to 6 mph.
Saturday
A slight chance of snow after noon, mixing with rain after 3pm. Mostly sunny, with a high near 45. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 24.
Sunday
Sunny, with a high near 38.
Sunday Night
Mostly clear, with a low around 18.
Monday
Sunny, with a high near 37.
Monday Night
Mostly clear, with a low around 20.
Tuesday
Mostly sunny, with a high near 52.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 61.
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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:
1:10 am CST Feb 19, 2026
Forecast Valid:
1am CST Feb 19, 2026-6pm CST Feb 25, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation