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

Hazardous Weather Conditions

Current conditions at

Cape Girardeau, Cape Girardeau Regional Airport (KCGI)

Lat: 37.23°NLon: 89.58°WElev: 341ft.

Fair

78°F

26°C

Humidity 90%
Wind Speed Calm
Barometer 29.94 in (1013.3 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 4 Sep 9:53 pm CDT
Extended Forecast for

Thebes IL

Extreme Heat Warning September 4, 10:56pm until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 4, 10:56pm until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Tonight

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Heat index values as high as 108. Calm wind.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 74. Calm wind.

    Low: 74 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 95. North northeast wind 3 to 7 mph.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 68. Northeast wind 3 to 7 mph.

    Low: 68 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 91. East northeast wind 3 to 5 mph.

    High: 91 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. Light east wind.

    Low: 67 °F

    Mostly Clear

  • Tuesday

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

    High: 95 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 76. Calm wind.
Saturday
Sunny and hot, with a high near 99. Heat index values as high as 108. Calm wind.
Saturday Night
Mostly clear, with a low around 74. Calm wind.
Sunday
Sunny, with a high near 95. North northeast wind 3 to 7 mph.
Sunday Night
Mostly clear, with a low around 68. Northeast wind 3 to 7 mph.
Labor Day
Sunny, with a high near 91. East northeast wind 3 to 5 mph.
Monday Night
Mostly clear, with a low around 67. Light east wind.
Tuesday
Sunny, with a high near 95. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Clear, with a low around 73. South southeast wind 3 to 5 mph.
Wednesday
Sunny and hot, with a high near 97. South southwest wind 5 to 8 mph.
Wednesday Night
Mostly clear, with a low around 74. South southwest wind around 5 mph.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 94. West southwest wind around 6 mph becoming north northwest in the afternoon.
Thursday Night
Mostly clear, with a low around 70. Light and variable wind.
Friday
A slight chance of showers. Sunny, with a high near 91. Calm wind becoming south southwest around 6 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Thebes IL
 37.22°N 89.45°W
Last Update:
9:31 pm CDT Sep 4, 2026
Forecast Valid:
10pm CDT Sep 4, 2026-6pm CDT Sep 11, 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