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

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Light Rain and Breezy

68°F

20°C

Humidity 73%
Wind Speed S 24 G 38 mph
Barometer 29.64 in (1003.4 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 8 Jan 5:52 pm CST
Extended Forecast for

Anna IL

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 1am, then a chance of showers between 1am and 2am. Low around 52. Breezy, with a south wind 13 to 22 mph becoming west after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 90%.

    Low: 52 °F

    Showers and
    Breezy then
    Showers
    Likely

  • Friday

    Friday: Partly sunny, with a temperature falling to around 51 by 5pm. West wind 6 to 11 mph becoming north northeast in the afternoon. Winds could gust as high as 22 mph.

    High: 55 °F⇓

    Partly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 42. North northeast wind 3 to 6 mph.

    Low: 42 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before noon. Cloudy through mid morning, then gradual clearing, with a high near 48. West northwest wind 6 to 13 mph, with gusts as high as 20 mph.

    High: 48 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 27. West northwest wind 6 to 10 mph.

    Low: 27 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 36. Northwest wind 6 to 11 mph becoming light in the afternoon. Winds could gust as high as 20 mph.

    High: 36 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 23. Light and variable wind.

    Low: 23 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 45. South southwest wind 5 to 11 mph, with gusts as high as 18 mph.

    High: 45 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 32. South southwest wind around 8 mph.

    Low: 32 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers and possibly a thunderstorm before 1am, then a chance of showers between 1am and 2am. Low around 52. Breezy, with a south wind 13 to 22 mph becoming west after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 90%.
Friday
Partly sunny, with a temperature falling to around 51 by 5pm. West wind 6 to 11 mph becoming north northeast in the afternoon. Winds could gust as high as 22 mph.
Friday Night
A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 42. North northeast wind 3 to 6 mph.
Saturday
A 20 percent chance of showers before noon. Cloudy through mid morning, then gradual clearing, with a high near 48. West northwest wind 6 to 13 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 27. West northwest wind 6 to 10 mph.
Sunday
Sunny, with a high near 36. Northwest wind 6 to 11 mph becoming light in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 23. Light and variable wind.
Monday
Sunny, with a high near 45. South southwest wind 5 to 11 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 32. South southwest wind around 8 mph.
Tuesday
Mostly sunny, with a high near 52. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly cloudy, with a low around 36. South southwest wind 6 to 9 mph becoming west after midnight.
Wednesday
Mostly cloudy, with a high near 44. Northwest wind 6 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 25. North northwest wind 6 to 8 mph.
Thursday
Mostly sunny, with a high near 37. North northwest wind around 7 mph becoming west in the afternoon.
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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:
5:21 pm CST Jan 8, 2026
Forecast Valid:
6pm CST Jan 8, 2026-6pm CST Jan 15, 2026
 
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Additional Resources

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Chance of Precipitation