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

53°F

12°C

Humidity 96%
Wind Speed Calm
Barometer 30.08 in (1018.3 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 10 Oct 6:52 am CDT
Extended Forecast for

Anna IL

  • Today

    Today: A 20 percent chance of showers after 4pm. Mostly cloudy, with a high near 72. Calm wind becoming east northeast 5 to 8 mph in the afternoon.

    High: 72 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: A chance of showers before midnight, then a slight chance of showers after 3am. Mostly cloudy, with a low around 56. Northeast wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 56 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 82. North northwest wind around 6 mph becoming west in the afternoon.

    High: 82 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 60. Light south wind.

    Low: 60 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 89. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 18 mph.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 65. South southwest wind 6 to 8 mph.

    Low: 65 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. West southwest wind 5 to 9 mph.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers after 1am. Mostly clear, with a low around 65. South southwest wind 3 to 5 mph.

    Low: 65 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 82. East southeast wind 5 to 8 mph.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers after 4pm. Mostly cloudy, with a high near 72. Calm wind becoming east northeast 5 to 8 mph in the afternoon.
Tonight
A chance of showers before midnight, then a slight chance of showers after 3am. Mostly cloudy, with a low around 56. Northeast wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 82. North northwest wind around 6 mph becoming west in the afternoon.
Sunday Night
Mostly clear, with a low around 60. Light south wind.
Columbus Day
Sunny, with a high near 89. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
Clear, with a low around 65. South southwest wind 6 to 8 mph.
Tuesday
Sunny, with a high near 89. West southwest wind 5 to 9 mph.
Tuesday Night
A slight chance of showers after 1am. Mostly clear, with a low around 65. South southwest wind 3 to 5 mph.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 82. East southeast wind 5 to 8 mph.
Wednesday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 62. Southeast wind 5 to 7 mph.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 80. South southwest wind 6 to 10 mph.
Thursday Night
A chance of showers. Partly cloudy, with a low around 57. South southwest wind 5 to 7 mph becoming west northwest after midnight.
Friday
A slight chance of showers. Partly sunny, with a high near 71. Northwest wind 7 to 14 mph, with gusts as high as 20 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:
7:41 am CDT Oct 10, 2026
Forecast Valid:
7am CDT Oct 10, 2026-6pm CDT Oct 16, 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