Severe Weather and Heavy Rainfall from the High Plains to the Ohio Valley; Heat Continuing in the Central Plains and Southeast

A stationary front will be the focus for daily showers and thunderstorms capable of widely scattered flash flooding and severe weather from the High Plains to the Ohio Valley. Monsoonal thunderstorms could cause local flash flooding across the Southwest and the Great Basin. Dangerous heat continues across the Central Plains and Southeast. Many areas will see their hottest temperatures of the year. Read More >

Current conditions at

Perryville Regional Airport (KPCD)

Lat: 37.87°NLon: 89.86°WElev: 372ft.

Fair

92°F

33°C

Humidity 64%
Wind Speed W 5 mph
Barometer 29.89 in
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index108°F (42°C)
Last update 12 Aug 11:35 am CDT
Extended Forecast for

Sainte Genevieve MO

Heat Advisory August 12, 11:51am until August 13, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 12, 11:51am until August 13, 08:00pm

    NOW until 8:00pm Thu

    Heat Advisory

  • Today

    High: 95 °F

    Sunny

  • Tonight

    Tonight: Isolated showers and thunderstorms after 4am.  Partly cloudy, with a low around 76. South wind 5 to 7 mph.  Chance of precipitation is 20%.

    Low: 76 °F

    Mostly Cloudy
    then Isolated
    T-storms

  • Thursday

    Thursday: Isolated showers and thunderstorms, mainly between 3pm and 4pm.  Mostly sunny and hot, with a high near 98. Heat index values as high as 111. South wind around 6 mph becoming west in the morning.  Chance of precipitation is 20%.

    High: 98 °F

    Isolated
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 76. South wind 5 to 8 mph.

    Low: 76 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and hot, with a high near 99. Light southwest wind.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 95. Heat index values as high as 107. Southwest wind 3 to 7 mph.
Tonight
Isolated showers and thunderstorms after 4am. Partly cloudy, with a low around 76. South wind 5 to 7 mph. Chance of precipitation is 20%.
Thursday
Isolated showers and thunderstorms, mainly between 3pm and 4pm. Mostly sunny and hot, with a high near 98. Heat index values as high as 111. South wind around 6 mph becoming west in the morning. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 76. South wind 5 to 8 mph.
Friday
Mostly sunny and hot, with a high near 99. Light southwest wind.
Friday Night
Mostly clear, with a low around 76.
Saturday
Sunny and hot, with a high near 100.
Saturday Night
Mostly clear, with a low around 76.
Sunday
Sunny and hot, with a high near 100.
Sunday Night
Mostly clear, with a low around 73.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Mostly sunny, with a high near 88.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Sainte Genevieve MO
 37.97°N 90.04°W (Elev. 390 ft)
11:41 am CDT Aug 12, 2026
11am CDT Aug 12, 2026-6pm CDT Aug 18, 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