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 and Breezy

32°F

0°C

Humidity 36%
Wind Speed NW 21 G 31 mph
Barometer 30.47 in (1032.7 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 22 Feb 4:54 pm CST
Extended Forecast for

Lake St. Louis MO

  • Tonight

    Tonight: Mostly clear, with a low around 13. Northwest wind 13 to 15 mph, with gusts as high as 29 mph.

    Low: 13 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 32. Northwest wind 7 to 14 mph, with gusts as high as 24 mph.

    High: 32 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 20. Calm wind becoming south 5 to 7 mph after midnight.

    Low: 20 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 56. South wind 8 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 26 mph.

    High: 56 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 33. Southwest wind 5 to 10 mph becoming light northwest after midnight. Winds could gust as high as 20 mph.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after midnight. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.

    Low: 35 °F

    Rain Likely

  • Thursday

    Thursday: A 20 percent chance of rain before noon. Mostly sunny, with a high near 52.

    High: 52 °F

    Slight Chance
    Rain then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 13. Northwest wind 13 to 15 mph, with gusts as high as 29 mph.
Monday
Sunny, with a high near 32. Northwest wind 7 to 14 mph, with gusts as high as 24 mph.
Monday Night
Increasing clouds, with a low around 20. Calm wind becoming south 5 to 7 mph after midnight.
Tuesday
Mostly cloudy, with a high near 56. South wind 8 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 26 mph.
Tuesday Night
Mostly cloudy, with a low around 33. Southwest wind 5 to 10 mph becoming light northwest after midnight. Winds could gust as high as 20 mph.
Wednesday
Mostly sunny, with a high near 55.
Wednesday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.
Thursday
A 20 percent chance of rain before noon. Mostly sunny, with a high near 52.
Thursday Night
Mostly clear, with a low around 30.
Friday
Sunny, with a high near 66.
Friday Night
Mostly clear, with a low around 39.
Saturday
Sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
A slight chance of rain and snow. Partly sunny, with a high near 50. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake St. Louis MO
 38.79°N 90.79°W (Elev. 512 ft)
Last Update:
3:11 pm CST Feb 22, 2026
Forecast Valid:
5pm CST Feb 22, 2026-6pm CST Mar 1, 2026
 
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Additional Resources

Radar & Satellite Image

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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