National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Overcast and Breezy

27°F

-3°C

Humidity 72%
Wind Speed NW 25 G 41 mph
Barometer 29.78 in (1008.5 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill12°F (-11°C)
Last update 16 Mar 3:54 am CDT
Extended Forecast for

2 Miles NW O'Fallon MO

Wind Advisory March 16, 04:24am until March 16, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory March 16, 04:24am until March 16, 12:00pm

    NOW until 12:00pm Mon

    Wind Advisory

  • Today

    High: 28 °F

    Chance Snow
    and Windy
    then Mostly
    Cloudy and
    Blustery

  • Tonight

    Tonight: Partly cloudy, with a low around 14. Northwest wind 10 to 17 mph, with gusts as high as 28 mph.

    Low: 14 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 37. Northwest wind 5 to 7 mph becoming south in the afternoon.

    High: 37 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A chance of snow before 1am, then a slight chance of rain and snow between 1am and 4am, then a slight chance of rain after 4am. Mostly cloudy, with a low around 32. Southeast wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    Low: 32 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 64. South wind 7 to 10 mph becoming west in the afternoon.

    High: 64 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Today
A chance of snow before 10am, then a chance of flurries between 10am and 11am. Mostly cloudy, with a high near 28. Windy, with a northwest wind 21 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 30%.
Tonight
Partly cloudy, with a low around 14. Northwest wind 10 to 17 mph, with gusts as high as 28 mph.
Tuesday
Increasing clouds, with a high near 37. Northwest wind 5 to 7 mph becoming south in the afternoon.
Tuesday Night
A chance of snow before 1am, then a slight chance of rain and snow between 1am and 4am, then a slight chance of rain after 4am. Mostly cloudy, with a low around 32. Southeast wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Wednesday
Mostly sunny, with a high near 64. South wind 7 to 10 mph becoming west in the afternoon.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Sunny, with a high near 73.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Mostly sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
Sunny, with a high near 70.
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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:
3:56 am CDT Mar 16, 2026
Forecast Valid:
4am CDT Mar 16, 2026-6pm CDT Mar 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation