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.

Mostly Cloudy

44°F

7°C

Humidity 76%
Wind Speed SW 8 mph
Barometer 29.69 in (1005.5 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 10 Dec 8:52 am CST
Extended Forecast for

Anna IL

  • Today

    Today: Partly sunny, with a temperature falling to around 37 by 5pm. Breezy, with a northwest wind 11 to 20 mph, with gusts as high as 38 mph.

    High: 45 °F⇓

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 25. Northwest wind 5 to 8 mph becoming calm after midnight.

    Low: 25 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 39. Light and variable wind becoming south southwest around 6 mph in the afternoon.

    High: 39 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 35. South southwest wind 6 to 8 mph.

    Low: 35 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 47. Southwest wind 7 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.

    High: 47 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 22. North northwest wind 5 to 8 mph.

    Low: 22 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 38. North wind around 6 mph becoming east southeast in the morning.

    High: 38 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 13. North wind 5 to 10 mph.

    Low: 13 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 26. North wind 7 to 10 mph.

    High: 26 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a temperature falling to around 37 by 5pm. Breezy, with a northwest wind 11 to 20 mph, with gusts as high as 38 mph.
Tonight
Mostly cloudy, with a low around 25. Northwest wind 5 to 8 mph becoming calm after midnight.
Thursday
Partly sunny, with a high near 39. Light and variable wind becoming south southwest around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 35. South southwest wind 6 to 8 mph.
Friday
Mostly sunny, with a high near 47. Southwest wind 7 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.
Friday Night
Mostly cloudy, with a low around 22. North northwest wind 5 to 8 mph.
Saturday
Partly sunny, with a high near 38. North wind around 6 mph becoming east southeast in the morning.
Saturday Night
Mostly cloudy, with a low around 13. North wind 5 to 10 mph.
Sunday
Sunny, with a high near 26. North wind 7 to 10 mph.
Sunday Night
Mostly clear, with a low around 13. North northeast wind around 6 mph becoming light and variable in the evening.
Monday
Mostly sunny, with a high near 36. Light and variable wind becoming south 5 to 8 mph in the morning.
Monday Night
A slight chance of rain and snow showers. Mostly cloudy, with a low around 27. South southwest wind around 6 mph.
Tuesday
Mostly cloudy, with a high near 44. South wind around 7 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:
5:41 am CST Dec 10, 2025
Forecast Valid:
9am CST Dec 10, 2025-6pm CST Dec 16, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation