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.

Fair

95°F

35°C

Humidity 43%
Wind Speed SW 9 mph
Barometer 29.87 in (1010.5 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 24 Jun 4:54 pm CDT
Extended Forecast for

Lake St. Louis MO

Heat Advisory June 25, 12:00pm until June 25, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly clear, with a low around 78. South wind around 6 mph.

    Low: 78 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 100. Heat index values as high as 111. West wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 100 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, mainly after 3am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 71. West wind 5 to 7 mph. Chance of precipitation is 70%.

    Low: 71 °F

    Slight Chance
    T-storms then
    Heavy Rain

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly before 7am. Some of the storms could produce heavy rainfall. Mostly cloudy, then gradually becoming sunny, with a high near 87. Northwest wind 3 to 8 mph. Chance of precipitation is 60%.

    High: 87 °F

    Heavy Rain

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64. North wind 5 to 7 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 95.

    High: 95 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 76.

    Low: 76 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 78. South wind around 6 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 100. Heat index values as high as 111. West wind 7 to 11 mph, with gusts as high as 21 mph.
Tuesday Night
Showers and thunderstorms likely, mainly after 3am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 71. West wind 5 to 7 mph. Chance of precipitation is 70%.
Wednesday
Showers and thunderstorms likely, mainly before 7am. Some of the storms could produce heavy rainfall. Mostly cloudy, then gradually becoming sunny, with a high near 87. Northwest wind 3 to 8 mph. Chance of precipitation is 60%.
Wednesday Night
Mostly clear, with a low around 64. North wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 88.
Thursday Night
Partly cloudy, with a low around 68.
Friday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 95.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 76.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 92.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 64.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 90.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Lake St. Louis MO
 38.79°N 90.79°W (Elev. 512 ft)
Last Update:
2:07 pm CDT Jun 24, 2024
Forecast Valid:
5pm CDT Jun 24, 2024-6pm CDT Jul 1, 2024
 
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