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

58°F

14°C

Humidity 60%
Wind Speed S 12 mph
Barometer 29.71 in (1005.7 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 15 Mar 2:52 am CDT
Extended Forecast for

Anna IL

Wind Advisory March 15, 10:00am until March 16, 07:00am
Click here for hazard details and duration
Wind Advisory

  • Overnight

    Overnight: Mostly cloudy, with a low around 55. South wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 55 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4pm. High near 69. Breezy, with a south wind 16 to 23 mph, with gusts as high as 39 mph. Chance of precipitation is 80%.

    High: 69 °F

    Breezy.
    Mostly Cloudy
    then Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms between 9pm and 10pm. Low around 25. Blustery, with a west northwest wind 20 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 90%.

    Low: 25 °F

    Blustery.
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 34. West northwest wind around 18 mph, with gusts as high as 30 mph.

    High: 34 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 17. West northwest wind 8 to 15 mph, with gusts as high as 22 mph.

    Low: 17 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 39. Northwest wind around 6 mph becoming west southwest in the afternoon.

    High: 39 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 30. South wind 5 to 13 mph, with gusts as high as 21 mph.

    Low: 30 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 58. South wind around 14 mph, with gusts as high as 23 mph.

    High: 58 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43. South southwest wind 6 to 8 mph.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 55. South wind 10 to 13 mph, with gusts as high as 21 mph.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4pm. High near 69. Breezy, with a south wind 16 to 23 mph, with gusts as high as 39 mph. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms between 9pm and 10pm. Low around 25. Blustery, with a west northwest wind 20 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 90%.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 34. West northwest wind around 18 mph, with gusts as high as 30 mph.
Monday Night
Mostly clear, with a low around 17. West northwest wind 8 to 15 mph, with gusts as high as 22 mph.
Tuesday
Sunny, with a high near 39. Northwest wind around 6 mph becoming west southwest in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 30. South wind 5 to 13 mph, with gusts as high as 21 mph.
Wednesday
Mostly cloudy, with a high near 58. South wind around 14 mph, with gusts as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 43. South southwest wind 6 to 8 mph.
Thursday
Sunny, with a high near 70. South southwest wind 5 to 7 mph.
Thursday Night
Partly cloudy, with a low around 46. West wind around 5 mph becoming north northeast after midnight.
Friday
Mostly sunny, with a high near 73. Southwest wind 5 to 8 mph.
Friday Night
Partly cloudy, with a low around 50. South southwest wind 6 to 8 mph becoming northwest after midnight.
Saturday
Partly sunny, with a high near 69. North northwest wind 8 to 10 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:
1:31 am CDT Mar 15, 2026
Forecast Valid:
3am CDT Mar 15, 2026-6pm CDT Mar 21, 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