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

81°F

27°C

Humidity 72%
Wind Speed SW 8 mph
Barometer 29.70 in (1004.9 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 21 Jun 5:54 pm CDT
Extended Forecast for

Ellisville MO

Flood Watch June 21, 06:44pm until June 22, 01:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch June 21, 06:44pm until June 22, 01:00am

    NOW until 1:00am Mon

    Flood Watch

  • Tonight

    Low: 63 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 76. North wind around 8 mph.

    High: 76 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60. North wind around 6 mph becoming calm in the evening.

    Low: 60 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 81. Light east wind.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 1am. Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.

    High: 83 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 84. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 63. Southwest wind 6 to 13 mph becoming northwest after midnight. Winds could gust as high as 25 mph.
Monday
Mostly cloudy, with a high near 76. North wind around 8 mph.
Monday Night
Partly cloudy, with a low around 60. North wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 81. Light east wind.
Tuesday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 63. Calm wind.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Thursday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 65.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ellisville MO
 38.58°N 90.6°W (Elev. 699 ft)
Last Update:
5:46 pm CDT Jun 21, 2026
Forecast Valid:
6pm CDT Jun 21, 2026-6pm CDT Jun 28, 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