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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Anna IL

  • Today

    Today: Sunny, with a high near 67. Light west wind becoming west northwest 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 67 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 42. West wind around 6 mph becoming northeast after midnight.

    Low: 42 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 67. East northeast wind around 6 mph becoming light and variable in the afternoon.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 49. South southeast wind 3 to 6 mph.

    Low: 49 °F

    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Southwest wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 53. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 53 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. Southwest wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58. South wind around 6 mph.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. South wind 7 to 15 mph, with gusts as high as 25 mph.

    High: 82 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 67. Light west wind becoming west northwest 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Tonight
Mostly clear, with a low around 42. West wind around 6 mph becoming northeast after midnight.
Monday
Sunny, with a high near 67. East northeast wind around 6 mph becoming light and variable in the afternoon.
Monday Night
Clear, with a low around 49. South southeast wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 76. Southwest wind 6 to 14 mph, with gusts as high as 24 mph.
Tuesday Night
Clear, with a low around 53. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 78. Southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 58. South wind around 6 mph.
Thursday
Sunny, with a high near 82. South wind 7 to 15 mph, with gusts as high as 25 mph.
Thursday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64. South wind around 11 mph, with gusts as high as 21 mph.
Friday
Showers and thunderstorms likely. Partly sunny, with a high near 78. South wind 11 to 14 mph, with gusts as high as 24 mph.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 53. Southwest wind 8 to 10 mph becoming north northwest after midnight. Winds could gust as high as 18 mph.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 71. North northwest wind around 10 mph, with gusts as high as 18 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Anna IL
 37.45°N 89.24°W
Last Update:
6:11 am CDT Apr 19, 2026
Forecast Valid:
8am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation