National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

86°F

30°C

Humidity 46%
Wind Speed SE 9 mph
Barometer 30.01 in (1015.9 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 14 Sep 5:53 pm CDT
Extended Forecast for

Imperial MO

Heat Advisory September 15, 11:00am until September 15, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly clear, with a low around 71. South wind 5 to 7 mph.

    Low: 71 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Sunny and hot, with a high near 98. Heat index values as high as 105. Southwest wind 5 to 7 mph.

    High: 98 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Light and variable wind.

    Low: 72 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms. Mostly cloudy, then gradually becoming sunny, with a high near 96. Heat index values as high as 105. Light and variable wind.

    High: 96 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 72. Light south wind.

    Low: 72 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 71. South wind 5 to 7 mph.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Sunny and hot, with a high near 98. Heat index values as high as 105. Southwest wind 5 to 7 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Light and variable wind.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, then gradually becoming sunny, with a high near 96. Heat index values as high as 105. Light and variable wind.
Wednesday Night
Mostly clear, with a low around 72. Light south wind.
Thursday
Sunny and hot, with a high near 97.
Thursday Night
Partly cloudy, with a low around 72.
Friday
Sunny, with a high near 95.
Friday Night
Mostly clear, with a low around 71.
Saturday
Sunny, with a high near 95.
Saturday Night
Partly cloudy, with a low around 70.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Imperial MO
 38.36°N 90.39°W (Elev. 571 ft)
Last Update:
5:41 pm CDT Sep 14, 2026
Forecast Valid:
6pm CDT Sep 14, 2026-6pm CDT Sep 21, 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