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

32°F

0°C

Humidity 59%
Wind Speed N 6 mph
Barometer 30.10 in (1019.8 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 21 Feb 1:54 am CST
Extended Forecast for

2 Miles NW O'Fallon MO

  • Overnight

    Overnight: A chance of flurries after 5am. Partly cloudy, with a low around 27. North wind 3 to 5 mph.

    Low: 27 °F

    Chance
    Flurries

  • Saturday

    Saturday: A chance of flurries with a slight chance of snow before 9am, then a chance of flurries between 9am and 10am. Partly sunny, with a high near 41. Northwest wind 6 to 10 mph. Chance of precipitation is 20%.

    High: 41 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 21. Northwest wind 8 to 15 mph, with gusts as high as 25 mph.

    Low: 21 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 33. Northwest wind 15 to 18 mph, with gusts as high as 32 mph.

    High: 33 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 15. Northwest wind 14 to 16 mph, with gusts as high as 26 mph.

    Low: 15 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 33.

    High: 33 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of flurries after 5am. Partly cloudy, with a low around 27. North wind 3 to 5 mph.
Saturday
A chance of flurries with a slight chance of snow before 9am, then a chance of flurries between 9am and 10am. Partly sunny, with a high near 41. Northwest wind 6 to 10 mph. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 21. Northwest wind 8 to 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 33. Northwest wind 15 to 18 mph, with gusts as high as 32 mph.
Sunday Night
Mostly clear, with a low around 15. Northwest wind 14 to 16 mph, with gusts as high as 26 mph.
Monday
Sunny, with a high near 33.
Monday Night
Mostly clear, with a low around 19.
Tuesday
Partly sunny, with a high near 54.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Partly sunny, with a high near 62.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 36.
Thursday
A 20 percent chance of rain. Mostly sunny, with a high near 53.
Thursday Night
Mostly clear, with a low around 32.
Friday
Sunny, with a high near 63.
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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:
12:26 am CST Feb 21, 2026
Forecast Valid:
1am CST Feb 21, 2026-6pm CST Feb 27, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation