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

Heavy Rainfall and Severe Thunderstorms in the Midwest and Ohio Valley Tuesday

Multiple rounds of severe thunderstorms appear likely Tuesday across the Midwest and Ohio Valley, with severe wind gusts in excess of 75 mph as the primary threat. Heavy to excessive rainfall may lead to considerable flash and urban flooding impacts Tuesday across portions of the Ohio Valley. A Moderate Risk (level 3 of 4) of excessive rainfall has been issued. Read More >

Hazardous Weather Conditions

Current conditions at

Harrisonville Lawrence Smith Memorial Airport (KLRY)

Lat: 38.61°NLon: 94.34°WElev: 915ft.

Fair

77°F

25°C

Humidity 74%
Wind Speed Calm
Barometer 29.98 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 11 Aug 3:55 am CDT
Extended Forecast for

6 Miles E Merwin MO

Extreme Heat Warning August 11, 04:06am until August 12, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 11, 04:06am until August 12, 08:00pm

    NOW until 8:00pm Wed

    Extreme Heat Warning

  • Today

    High: 98 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 79. South southwest wind 6 to 9 mph, with gusts as high as 20 mph.

    Low: 79 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 100. Heat index values as high as 108. South southwest wind 7 to 13 mph, with gusts as high as 21 mph.

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 79. South southwest wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: 79 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 99. South wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 77.

    Low: 77 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Friday Night

    Friday Night: Partly cloudy, with a low around 77.

    Low: 77 °F

    Partly Cloudy

Detailed Forecast

Today
Sunny and hot, with a high near 98. Heat index values as high as 105. South southwest wind 8 to 13 mph, with gusts as high as 22 mph.
Tonight
Mostly clear, with a low around 79. South southwest wind 6 to 9 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny and hot, with a high near 100. Heat index values as high as 108. South southwest wind 7 to 13 mph, with gusts as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 79. South southwest wind 7 to 9 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny and hot, with a high near 99. South wind 8 to 10 mph, with gusts as high as 18 mph.
Thursday Night
Partly cloudy, with a low around 77.
Friday
Mostly sunny and hot, with a high near 97.
Friday Night
Partly cloudy, with a low around 77.
Saturday
Mostly sunny and hot, with a high near 98.
Saturday Night
Mostly clear, with a low around 77.
Sunday
Mostly sunny, with a high near 95.
Sunday Night
Partly cloudy, with a low around 72.
Monday
Partly sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles E Merwin MO
 38.4°N 94.49°W (Elev. 896 ft)
Last Update:
2:27 am CDT Aug 11, 2026
Forecast Valid:
4am CDT Aug 11, 2026-6pm CDT Aug 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation