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 28%
Wind Speed SE 7 mph
Barometer 30.14 in (1020.6 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 24 Mar 9:54 pm CDT
Extended Forecast for

2 Miles NW O'Fallon MO

  • Tonight

    Tonight: Mostly cloudy, with a low around 44. South wind around 6 mph.

    Low: 44 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 79. Light south wind becoming southwest 5 to 9 mph in the morning.

    High: 79 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64. South wind 7 to 10 mph, with gusts as high as 22 mph.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 90. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Rain. Low around 42. Southwest wind 9 to 17 mph becoming north after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 90%.

    Low: 42 °F

    Rain

  • Friday

    Friday: A 30 percent chance of rain before 1pm. Partly sunny, with a high near 52.

    High: 52 °F

    Chance Rain

  • Friday Night

    Friday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 44. South wind around 6 mph.
Wednesday
Mostly sunny, with a high near 79. Light south wind becoming southwest 5 to 9 mph in the morning.
Wednesday Night
Mostly clear, with a low around 64. South wind 7 to 10 mph, with gusts as high as 22 mph.
Thursday
Sunny, with a high near 90. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Thursday Night
Rain. Low around 42. Southwest wind 9 to 17 mph becoming north after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 90%.
Friday
A 30 percent chance of rain before 1pm. Partly sunny, with a high near 52.
Friday Night
Mostly clear, with a low around 31.
Saturday
Sunny, with a high near 59.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Partly sunny, with a high near 66.
Sunday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 51.
Monday
Mostly sunny, with a high near 80.
Monday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 58.
Tuesday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 78.
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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:
8:51 pm CDT Mar 24, 2026
Forecast Valid:
10pm CDT Mar 24, 2026-6pm CDT Mar 31, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation