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.

Fair

26°F

-3°C

Humidity 53%
Wind Speed NW 17 G 28 mph
Barometer 30.09 in (1019.0 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 29 Dec 1:52 am CST
Extended Forecast for

Anna IL

Wind Advisory December 29, 02:11am until December 29, 06:00am
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory December 29, 02:11am until December 29, 06:00am

    NOW until 6:00am Mon

    Wind Advisory

  • Overnight

    Low: 20 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 30. Northwest wind 13 to 18 mph, with gusts as high as 30 mph.

    High: 30 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 17. Northwest wind 8 to 13 mph, with gusts as high as 21 mph.

    Low: 17 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 35. Northwest wind 5 to 7 mph becoming southwest in the afternoon.

    High: 35 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 26. Southwest wind around 6 mph.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 45. West northwest wind 5 to 8 mph.

    High: 45 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 26. West northwest wind 3 to 5 mph.

    Low: 26 °F

    Mostly Clear

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 41. North wind 3 to 6 mph.

    High: 41 °F

    Mostly Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 20. West northwest wind around 18 mph, with gusts as high as 33 mph.
Monday
Sunny, with a high near 30. Northwest wind 13 to 18 mph, with gusts as high as 30 mph.
Monday Night
Mostly clear, with a low around 17. Northwest wind 8 to 13 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 35. Northwest wind 5 to 7 mph becoming southwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 26. Southwest wind around 6 mph.
Wednesday
Mostly sunny, with a high near 45. West northwest wind 5 to 8 mph.
Wednesday Night
Mostly clear, with a low around 26. West northwest wind 3 to 5 mph.
New Year's Day
Mostly sunny, with a high near 41. North wind 3 to 6 mph.
Thursday Night
Mostly cloudy, with a low around 25. Light east northeast wind.
Friday
Mostly cloudy, with a high near 41. East wind 3 to 6 mph.
Friday Night
A slight chance of showers. Mostly cloudy, with a low around 29. North northeast wind 3 to 5 mph.
Saturday
Partly sunny, with a high near 42. North wind 3 to 6 mph.
Saturday Night
Partly cloudy, with a low around 24. Light and variable wind becoming east southeast around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 43. East southeast wind 5 to 7 mph becoming south in the morning.
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:
12:21 am CST Dec 29, 2025
Forecast Valid:
2am CST Dec 29, 2025-6pm CST Jan 4, 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