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.

A Few Clouds

50°F

10°C

Humidity 44%
Wind Speed NE 3 mph
Barometer 29.77 in (1008.2 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 25 Feb 10:54 am CST
Extended Forecast for

2 Miles NW O'Fallon MO

  • Today

    Today: Mostly cloudy, with a high near 52. Light and variable wind.

    High: 52 °F

    Mostly Cloudy

  • Tonight

    Tonight: A chance of rain between 10pm and 3am. Mostly cloudy, with a low around 34. East wind 3 to 6 mph. Chance of precipitation is 40%.

    Low: 34 °F

    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 56. Northeast wind around 5 mph becoming calm in the morning.

    High: 56 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 35. Calm wind becoming southwest around 5 mph after midnight.

    Low: 35 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 69. Southwest wind 5 to 11 mph, with gusts as high as 20 mph.

    High: 69 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain. Partly cloudy, with a low around 31.

    Low: 31 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A chance of rain before noon, then a chance of rain and snow. Mostly cloudy, with a high near 44. Chance of precipitation is 50%.

    High: 44 °F

    Chance Rain
    then Chance
    Rain/Snow

Detailed Forecast

Today
Mostly cloudy, with a high near 52. Light and variable wind.
Tonight
A chance of rain between 10pm and 3am. Mostly cloudy, with a low around 34. East wind 3 to 6 mph. Chance of precipitation is 40%.
Thursday
Mostly sunny, with a high near 56. Northeast wind around 5 mph becoming calm in the morning.
Thursday Night
Mostly clear, with a low around 35. Calm wind becoming southwest around 5 mph after midnight.
Friday
Sunny, with a high near 69. Southwest wind 5 to 11 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 41.
Saturday
Mostly sunny, with a high near 61.
Saturday Night
A 20 percent chance of rain. Partly cloudy, with a low around 31.
Sunday
A chance of rain before noon, then a chance of rain and snow. Mostly cloudy, with a high near 44. Chance of precipitation is 50%.
Sunday Night
Rain and snow likely, mainly before midnight. Some thunder is also possible. Mostly cloudy, with a low around 31. Chance of precipitation is 60%.
Monday
A 40 percent chance of rain. Mostly cloudy, with a high near 40.
Monday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 29.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 46.
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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:
10:26 am CST Feb 25, 2026
Forecast Valid:
11am CST Feb 25, 2026-6pm CST Mar 3, 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