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

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Overcast

65°F

18°C

Humidity 51%
Wind Speed Calm
Barometer 29.88 in (1012.0 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 5 Nov 4:52 pm CST
Extended Forecast for

2 Miles N Grand Tower IL

  • Tonight

    Tonight: Increasing clouds, with a low around 44. Northwest wind 5 to 7 mph.

    Low: 44 °F

    Increasing
    Clouds

  • Friday

    Friday: Partly sunny, with a high near 57. North wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 57 °F

    Partly Sunny

  • Friday Night

    Friday Night: Patchy frost after 1am. Otherwise, clear, with a low around 29. North wind around 5 mph becoming calm in the evening.

    Low: 29 °F

    Mostly Clear
    then Patchy
    Frost

  • Saturday

    Saturday: Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 55. Light north wind.

    High: 55 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 30. Calm wind.

    Low: 30 °F

    Mostly Clear
    then Frost

  • Sunday

    Sunday: Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 62. Calm wind.

    High: 62 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Patchy frost after 3am. Otherwise, clear, with a low around 32. Calm wind.

    Low: 32 °F

    Clear then
    Patchy Frost

  • Monday

    Monday: Areas of frost before 7am. Otherwise, sunny, with a high near 68. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 68 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Clear, with a low around 36. Light south southwest wind.

    Low: 36 °F

    Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 44. Northwest wind 5 to 7 mph.
Friday
Partly sunny, with a high near 57. North wind 7 to 11 mph, with gusts as high as 21 mph.
Friday Night
Patchy frost after 1am. Otherwise, clear, with a low around 29. North wind around 5 mph becoming calm in the evening.
Saturday
Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 55. Light north wind.
Saturday Night
Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 30. Calm wind.
Sunday
Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 62. Calm wind.
Sunday Night
Patchy frost after 3am. Otherwise, clear, with a low around 32. Calm wind.
Monday
Areas of frost before 7am. Otherwise, sunny, with a high near 68. Calm wind becoming south southwest around 6 mph in the afternoon.
Monday Night
Clear, with a low around 36. Light south southwest wind.
Tuesday
Sunny, with a high near 68. Light west wind.
Tuesday Night
Clear, with a low around 36. Calm wind.
Veterans Day
Sunny, with a high near 66. Calm wind becoming northwest around 5 mph.
Wednesday Night
Mostly clear, with a low around 37. Calm wind.
Thursday
Sunny, with a high near 64. Calm wind becoming northwest around 6 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Grand Tower IL
 37.66°N 89.51°W
Last Update:
4:21 pm CST Nov 5, 2026
Forecast Valid:
5pm CST Nov 5, 2026-6pm CST Nov 12, 2026
 
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