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.

Partly Cloudy

70°F

21°C

Humidity 73%
Wind Speed N 8 mph
Barometer 30.15 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 2 Oct 5:52 pm CDT
Extended Forecast for

Anna ILSimilar City Names

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 56. Northeast wind 3 to 8 mph.

    Low: 56 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 72. Northeast wind around 8 mph.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 57. Light northeast wind.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 77. North wind 3 to 8 mph.

    High: 77 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55. North wind 3 to 6 mph.

    Low: 55 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 73. North northeast wind 6 to 9 mph.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 47. Northeast wind around 5 mph.

    Low: 47 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73. East wind 3 to 5 mph.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 47. Calm wind.

    Low: 47 °F

    Clear

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 56. Northeast wind 3 to 8 mph.
Saturday
Mostly sunny, with a high near 72. Northeast wind around 8 mph.
Saturday Night
Mostly cloudy, with a low around 57. Light northeast wind.
Sunday
Mostly sunny, with a high near 77. North wind 3 to 8 mph.
Sunday Night
Mostly clear, with a low around 55. North wind 3 to 6 mph.
Monday
Sunny, with a high near 73. North northeast wind 6 to 9 mph.
Monday Night
Clear, with a low around 47. Northeast wind around 5 mph.
Tuesday
Sunny, with a high near 73. East wind 3 to 5 mph.
Tuesday Night
Clear, with a low around 47. Calm wind.
Wednesday
Sunny, with a high near 79. Calm wind.
Wednesday Night
Clear, with a low around 53. Calm wind.
Thursday
Sunny, with a high near 81. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
Clear, with a low around 54. Calm wind.
Friday
Sunny, with a high near 82. Calm wind becoming west northwest around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Anna ILSimilar City Names
 37.45°N 89.24°W
Last Update:
5:46 pm CDT Oct 2, 2026
Forecast Valid:
6pm CDT Oct 2, 2026-6pm CDT Oct 9, 2026
 
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