Current conditions at

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Partly Cloudy

48°F

9°C

Humidity 68%
Wind Speed W 9 mph
Barometer 30.06 in (1017.8 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 9 Jan 9:54 am CST
Extended Forecast for

Lake St. Louis MO

  • Today

    Today: Mostly cloudy, with a high near 50. Northwest wind 5 to 8 mph becoming light and variable  in the afternoon.

    High: 50 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 40 percent chance of rain, mainly after 2am.  Increasing clouds, with a low around 34. Calm wind becoming northwest 5 to 7 mph after midnight.

    Low: 34 °F

    Partly Cloudy
    then Chance
    Rain

  • Saturday

    Saturday: A 20 percent chance of rain before 7am.  Cloudy through mid morning, then gradual clearing, with a high near 47. West wind 8 to 14 mph, with gusts as high as 25 mph.

    High: 47 °F

    Slight Chance
    Rain then
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 23. Northwest wind 11 to 14 mph, with gusts as high as 25 mph.

    Low: 23 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 38. Northwest wind 5 to 14 mph, with gusts as high as 25 mph.

    High: 38 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 50. Northwest wind 5 to 8 mph becoming light and variable in the afternoon.
Tonight
A 40 percent chance of rain, mainly after 2am. Increasing clouds, with a low around 34. Calm wind becoming northwest 5 to 7 mph after midnight.
Saturday
A 20 percent chance of rain before 7am. Cloudy through mid morning, then gradual clearing, with a high near 47. West wind 8 to 14 mph, with gusts as high as 25 mph.
Saturday Night
Partly cloudy, with a low around 23. Northwest wind 11 to 14 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 38. Northwest wind 5 to 14 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 25.
Monday
Sunny, with a high near 52.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Partly sunny, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
A 20 percent chance of rain. Mostly cloudy, with a high near 42.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
Mostly sunny, with a high near 39.
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ABOUT THIS FORECAST

 
Point Forecast:
Lake St. Louis MO
 38.79°N 90.79°W (Elev. 512 ft)
9:01 am CST Jan 9, 2026
10am CST Jan 9, 2026-6pm CST Jan 15, 2026
 
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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