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Heavy Rain From the Plains to the Northeast; Heat Wave Begins

Severe thunderstorms and heavy rainfall are likely across parts of the Northeast, portions of the northern and central Plains, and the Ohio Valley. Portions of northeast Missouri and central Illinois could experience locally significant flash flooding. Dangerously hot conditions are expected in the Central Plains, Lower and Middle Mississippi Valley, and Southeast. Read More >

Hazardous Weather Conditions

Current conditions at

Cape Girardeau, Cape Girardeau Regional Airport (KCGI)

Lat: 37.23°NLon: 89.58°WElev: 341ft.

Fair

87°F

31°C

Humidity 72%
Wind Speed W 6 mph
Barometer 30.02 in (1016.0 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 20 Jul 11:53 am CDT
Extended Forecast for

Glenallen MO

Extreme Heat Warning July 20, 12:51pm until July 20, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 20, 12:51pm until July 20, 08:00pm

    NOW until 8:00pm Sun

    Extreme Heat Warning

  • This Afternoon

    High: 94 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 75. South southwest wind around 6 mph becoming calm in the evening.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 94. Light and variable wind becoming south southeast 5 to 7 mph in the afternoon.

    High: 94 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 74. South southeast wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Calm wind becoming south around 5 mph in the afternoon.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 75. South wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 95. Calm wind becoming south around 5 mph in the afternoon.

    High: 95 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74. South southeast wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 94. South southwest wind 6 to 10 mph.
Tonight
Mostly clear, with a low around 75. South southwest wind around 6 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 94. Light and variable wind becoming south southeast 5 to 7 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 74. South southeast wind around 5 mph becoming calm in the evening.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 75. South wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 95. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 74. South southeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 94. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 73. South southeast wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 93. Calm wind becoming south 5 to 7 mph in the morning.
Friday Night
Mostly clear, with a low around 73. South wind around 6 mph becoming calm in the evening.
Saturday
A slight chance of showers and thunderstorms. Sunny, with a high near 92. Calm wind becoming south around 6 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Glenallen MO
 37.3°N 90.01°W
Last Update:
12:17 pm CDT Jul 20, 2025
Forecast Valid:
12pm CDT Jul 20, 2025-6pm CDT Jul 26, 2025
 
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