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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

70°F

21°C

Humidity 79%
Wind Speed S 15 mph
Barometer 29.89 in (1011.6 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 15 Apr 5:52 am CDT
Extended Forecast for

2 Miles ESE Grand Tower IL

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 84. South southwest wind 11 to 18 mph, with gusts as high as 29 mph.

    High: 84 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 5am, then a chance of showers and thunderstorms after 5am. Low around 65. South southwest wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    Low: 65 °F

    Chance
    Showers then
    Showers

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 10am. Mostly cloudy, then gradually becoming sunny, with a high near 82. Southwest wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 62. South southwest wind 3 to 7 mph. Chance of precipitation is 20%.

    Low: 62 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Light south wind becoming south southwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 87 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 60. South wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Low: 60 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 73. South southwest wind 11 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph.

    High: 73 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers, mainly before 1am. Partly cloudy, with a low around 41. Northwest wind 8 to 11 mph, with gusts as high as 18 mph.

    Low: 41 °F

    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 66. West northwest wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 66 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 84. South southwest wind 11 to 18 mph, with gusts as high as 29 mph.
Tonight
Showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 5am, then a chance of showers and thunderstorms after 5am. Low around 65. South southwest wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Thursday
Showers likely, with thunderstorms also possible after 10am. Mostly cloudy, then gradually becoming sunny, with a high near 82. Southwest wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Thursday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 62. South southwest wind 3 to 7 mph. Chance of precipitation is 20%.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Light south wind becoming south southwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Friday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 60. South wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 73. South southwest wind 11 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
A chance of showers, mainly before 1am. Partly cloudy, with a low around 41. Northwest wind 8 to 11 mph, with gusts as high as 18 mph.
Sunday
Sunny, with a high near 66. West northwest wind 7 to 10 mph, with gusts as high as 18 mph.
Sunday Night
Clear, with a low around 41. North northwest wind 5 to 7 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 72. South wind 5 to 8 mph.
Monday Night
Mostly clear, with a low around 49. South wind around 7 mph.
Tuesday
Mostly sunny, with a high near 77. South southwest wind 6 to 11 mph, with gusts as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Grand Tower IL
 37.62°N 89.46°W
Last Update:
1:51 am CDT Apr 15, 2026
Forecast Valid:
6am CDT Apr 15, 2026-6pm CDT Apr 21, 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