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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

73°F

23°C

Humidity 79%
Wind Speed S 10 mph
Barometer 29.92 in (1012.6 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 17 May 2:52 am CDT
Extended Forecast for

2 Miles NNE Grand Tower IL

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 72. South wind around 9 mph.

    Low: 72 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 90. South wind 9 to 16 mph, with gusts as high as 25 mph.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 71. South wind around 14 mph, with gusts as high as 22 mph.

    Low: 71 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 89. South wind 14 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    High: 89 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. South wind around 14 mph, with gusts as high as 22 mph.

    Low: 72 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 88. South southwest wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 88 °F

    Chance
    T-storms then
    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 62. Southwest wind 5 to 9 mph becoming light and variable. Chance of precipitation is 90%.

    Low: 62 °F

    T-storms then
    Showers

  • Wednesday

    Wednesday: A chance of showers, mainly after 1pm. Mostly cloudy, with a high near 74. North wind around 9 mph.

    High: 74 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers. Mostly cloudy, with a low around 55. North northeast wind 6 to 9 mph.

    Low: 55 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 72. South wind around 9 mph.
Sunday
Sunny, with a high near 90. South wind 9 to 16 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 71. South wind around 14 mph, with gusts as high as 22 mph.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 89. South wind 14 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. South wind around 14 mph, with gusts as high as 22 mph.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 88. South southwest wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 62. Southwest wind 5 to 9 mph becoming light and variable. Chance of precipitation is 90%.
Wednesday
A chance of showers, mainly after 1pm. Mostly cloudy, with a high near 74. North wind around 9 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 55. North northeast wind 6 to 9 mph.
Thursday
A slight chance of showers. Partly sunny, with a high near 74. Northeast wind around 8 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 57. Northeast wind 5 to 8 mph becoming calm after midnight.
Friday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 78. East northeast wind 3 to 6 mph.
Friday Night
A chance of showers. Mostly cloudy, with a low around 61. Northeast wind around 6 mph becoming calm in the evening.
Saturday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Calm wind becoming south southeast around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Grand Tower IL
 37.66°N 89.49°W
Last Update:
1:26 am CDT May 17, 2026
Forecast Valid:
3am CDT May 17, 2026-6pm CDT May 23, 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