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

60°F

16°C

Humidity 93%
Wind Speed Calm
Barometer 29.73 in (1006.0 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 11 Mar 8:54 am CDT
Extended Forecast for

Lake St. Louis MO

  • Today

    Today: A 50 percent chance of showers, mainly before 3pm. Cloudy, with a temperature falling to around 44 by 3pm. Northwest wind 11 to 18 mph, with gusts as high as 31 mph.

    High: 59 °F⇓

    Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 30. Northwest wind 12 to 17 mph becoming light west after midnight. Winds could gust as high as 28 mph.

    Low: 30 °F

    Gradual
    Clearing

  • Thursday

    Thursday: Sunny, with a high near 56. Light west wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 56 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 44. Breezy, with a south wind 10 to 20 mph, with gusts as high as 33 mph.

    Low: 44 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 61. West wind 9 to 14 mph, with gusts as high as 26 mph.

    High: 61 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: Rain likely and possibly a thunderstorm, then rain after 1pm. High near 65. Breezy. Chance of precipitation is 80%.

    High: 65 °F

    Rain and
    Breezy

Detailed Forecast

Today
A 50 percent chance of showers, mainly before 3pm. Cloudy, with a temperature falling to around 44 by 3pm. Northwest wind 11 to 18 mph, with gusts as high as 31 mph.
Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 30. Northwest wind 12 to 17 mph becoming light west after midnight. Winds could gust as high as 28 mph.
Thursday
Sunny, with a high near 56. Light west wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 44. Breezy, with a south wind 10 to 20 mph, with gusts as high as 33 mph.
Friday
Partly sunny, with a high near 61. West wind 9 to 14 mph, with gusts as high as 26 mph.
Friday Night
Mostly cloudy, with a low around 37.
Saturday
Partly sunny, with a high near 66.
Saturday Night
A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 51.
Sunday
Rain likely and possibly a thunderstorm, then rain after 1pm. High near 65. Breezy. Chance of precipitation is 80%.
Sunday Night
A chance of rain and snow before 1am. Partly cloudy, with a low around 24. Blustery. Chance of precipitation is 30%.
Monday
Sunny, with a high near 39.
Monday Night
Partly cloudy, with a low around 21.
Tuesday
Partly sunny, with a high near 45.
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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:
7:41 am CDT Mar 11, 2026
Forecast Valid:
9am CDT Mar 11, 2026-6pm CDT Mar 17, 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