Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Mostly Cloudy

41°F

5°C

Humidity 82%
Wind Speed SW 15 G 31 mph
Barometer 29.70 in (1006.0 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 10 Dec 12:52 am CST
Extended Forecast for

Anna IL

  • Overnight

    Overnight: A 20 percent chance of showers after 4am.  Cloudy, with a steady temperature around 44. Southwest wind around 16 mph, with gusts as high as 30 mph.

    Low: 44 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Partly sunny, with a temperature rising to near 46 by 9am, then falling to around 39 during the remainder of the day. Breezy, with a west southwest wind 11 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 38 mph.

    High: 46 °F

    Partly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 26. Northwest wind 5 to 8 mph becoming calm  after midnight.

    Low: 26 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 39. Calm wind becoming west southwest around 6 mph in the morning.

    High: 39 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 34. South southwest wind around 7 mph.

    Low: 34 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 51. Southwest wind 6 to 9 mph becoming north northwest in the afternoon.

    High: 51 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 25. North wind around 7 mph.

    Low: 25 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 39. North wind around 7 mph.

    High: 39 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain and snow showers before midnight.  Mostly cloudy, with a low around 14. North wind 6 to 9 mph.

    Low: 14 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers after 4am. Cloudy, with a steady temperature around 44. Southwest wind around 16 mph, with gusts as high as 30 mph.
Wednesday
Partly sunny, with a temperature rising to near 46 by 9am, then falling to around 39 during the remainder of the day. Breezy, with a west southwest wind 11 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 38 mph.
Wednesday Night
Partly cloudy, with a low around 26. Northwest wind 5 to 8 mph becoming calm after midnight.
Thursday
Partly sunny, with a high near 39. Calm wind becoming west southwest around 6 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 34. South southwest wind around 7 mph.
Friday
Mostly sunny, with a high near 51. Southwest wind 6 to 9 mph becoming north northwest in the afternoon.
Friday Night
Mostly cloudy, with a low around 25. North wind around 7 mph.
Saturday
Partly sunny, with a high near 39. North wind around 7 mph.
Saturday Night
A slight chance of rain and snow showers before midnight. Mostly cloudy, with a low around 14. North wind 6 to 9 mph.
Sunday
Sunny, with a high near 26. North wind 7 to 9 mph.
Sunday Night
Partly cloudy, with a low around 15. North northeast wind around 6 mph becoming light and variable in the evening.
Monday
A slight chance of showers. Mostly sunny, with a high near 37. Light and variable wind becoming south 5 to 7 mph in the morning.
Monday Night
A slight chance of rain or freezing rain. Mostly cloudy, with a low around 25. South wind 3 to 5 mph.
Tuesday
A slight chance of showers. Partly sunny, with a high near 40. South wind 5 to 7 mph.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Anna IL
 37.45°N 89.24°W
7:52 pm CST Dec 9, 2025
1am CST Dec 10, 2025-6pm CST Dec 16, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database