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.

Fair

55°F

13°C

Humidity 93%
Wind Speed Calm
Barometer 30.02 in (1016.4 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 11 Oct 7:52 am CDT
Extended Forecast for

Anna IL

  • Today

    Today: Sunny, with a high near 84. West northwest wind 3 to 5 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. Light south wind.

    Low: 60 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 89. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 18 mph.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 65. South southwest wind around 7 mph.

    Low: 65 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91. Southwest wind 6 to 11 mph.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69. South southwest wind 3 to 5 mph.

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 86. West southwest wind 3 to 6 mph. Chance of precipitation is 60%.

    High: 86 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. North wind 3 to 5 mph.

    Low: 65 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. East wind 6 to 10 mph becoming south southwest in the afternoon.

    High: 82 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 84. West northwest wind 3 to 5 mph.
Tonight
Mostly clear, with a low around 60. Light south wind.
Columbus Day
Sunny, with a high near 89. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
Clear, with a low around 65. South southwest wind around 7 mph.
Tuesday
Sunny, with a high near 91. Southwest wind 6 to 11 mph.
Tuesday Night
Mostly clear, with a low around 69. South southwest wind 3 to 5 mph.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 86. West southwest wind 3 to 6 mph. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. North wind 3 to 5 mph.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. East wind 6 to 10 mph becoming south southwest in the afternoon.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. West southwest wind 6 to 8 mph.
Friday
A slight chance of showers. Partly sunny, with a high near 70. North northwest wind 11 to 17 mph, with gusts as high as 23 mph.
Friday Night
Partly cloudy, with a low around 45. North northwest wind 9 to 16 mph, with gusts as high as 22 mph.
Saturday
Mostly sunny, with a high near 61. North wind 10 to 13 mph, with gusts as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Anna IL
 37.45°N 89.24°W
Last Update:
4:56 am CDT Oct 11, 2026
Forecast Valid:
8am CDT Oct 11, 2026-6pm CDT Oct 17, 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