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.

Mostly Cloudy

71°F

22°C

Humidity 87%
Wind Speed NE 12 mph
Barometer 30.02 in (1016.2 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 18 May 7:53 pm CDT
Extended Forecast for

Thebes IL

  • Tonight

    Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Partly cloudy, with a low around 71. East wind 7 to 11 mph becoming south after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 40%.

    Low: 71 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. High near 87. South southwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.

    High: 87 °F

    Chance
    Showers then
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 63. Southwest wind 5 to 7 mph becoming calm. Chance of precipitation is 80%.

    Low: 63 °F

    T-storms
    Likely then
    Showers

  • Wednesday

    Wednesday: Showers likely before 7am, then showers likely and possibly a thunderstorm between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 73. North wind around 9 mph. Chance of precipitation is 60%.

    High: 73 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 58. North northeast wind 5 to 8 mph.

    Low: 58 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 75. Northeast wind around 8 mph. Chance of precipitation is 20%.

    High: 75 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 61. East northeast wind 5 to 8 mph. Chance of precipitation is 80%.

    Low: 61 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. Mostly cloudy, with a high near 78. East southeast wind 6 to 8 mph becoming southwest in the afternoon.

    High: 78 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. South southwest wind 3 to 7 mph.

    Low: 63 °F

    Showers
    Likely

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Partly cloudy, with a low around 71. East wind 7 to 11 mph becoming south after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 40%.
Tuesday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. High near 87. South southwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.
Tuesday Night
Showers and thunderstorms likely before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 63. Southwest wind 5 to 7 mph becoming calm. Chance of precipitation is 80%.
Wednesday
Showers likely before 7am, then showers likely and possibly a thunderstorm between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 73. North wind around 9 mph. Chance of precipitation is 60%.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 58. North northeast wind 5 to 8 mph.
Thursday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 75. Northeast wind around 8 mph. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 61. East northeast wind 5 to 8 mph. Chance of precipitation is 80%.
Friday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 78. East southeast wind 6 to 8 mph becoming southwest in the afternoon.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. South southwest wind 3 to 7 mph.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Southwest wind 3 to 6 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. South southeast wind around 5 mph becoming calm in the evening.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 66. Light southeast wind.
Memorial Day
A chance of showers and thunderstorms. Partly sunny, with a high near 85. Calm wind becoming south 5 to 7 mph in the afternoon.
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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:
7:21 pm CDT May 18, 2026
Forecast Valid:
8pm CDT May 18, 2026-6pm CDT May 25, 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