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.

Fog/Mist

48°F

9°C

Humidity 89%
Wind Speed W 3 mph
Barometer 30.22 in (1023.6 mb)
Dewpoint 45°F (7°C)
Visibility 3.00 mi
Last update 23 Nov 8:54 am CST
Extended Forecast for

Lake St. Louis MO

  • Today

    Today: Patchy fog before 10am. Otherwise, cloudy early, then gradual clearing, with a high near 57. Light and variable wind.

    High: 57 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 44. South wind 3 to 5 mph.

    Low: 44 °F

    Mostly Cloudy

  • Monday

    Monday: Rain likely, mainly after noon. Mostly cloudy, with a high near 58. South wind 5 to 8 mph. Chance of precipitation is 70%.

    High: 58 °F

    Slight Chance
    Rain then
    Rain Likely

  • Monday Night

    Monday Night: Rain, mainly before midnight. Low around 49. Southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 49 °F

    Rain then
    Chance Rain

  • Tuesday

    Tuesday: A 20 percent chance of rain after noon. Mostly cloudy, with a high near 61. Calm wind becoming west 5 to 8 mph in the morning.

    High: 61 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, cloudy early, then gradual clearing, with a high near 57. Light and variable wind.
Tonight
Mostly cloudy, with a low around 44. South wind 3 to 5 mph.
Monday
Rain likely, mainly after noon. Mostly cloudy, with a high near 58. South wind 5 to 8 mph. Chance of precipitation is 70%.
Monday Night
Rain, mainly before midnight. Low around 49. Southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%.
Tuesday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 61. Calm wind becoming west 5 to 8 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 34.
Wednesday
Sunny, with a high near 46.
Wednesday Night
Partly cloudy, with a low around 27.
Thanksgiving Day
Mostly sunny, with a high near 44.
Thursday Night
Partly cloudy, with a low around 26.
Friday
Partly sunny, with a high near 46.
Friday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 32.
Saturday
A 50 percent chance of rain. Mostly cloudy, with a high near 48.
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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:
9:06 am CST Nov 23, 2025
Forecast Valid:
9am CST Nov 23, 2025-6pm CST Nov 29, 2025
 
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