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.

Partly Cloudy

30°F

-1°C

Humidity 92%
Wind Speed Calm
Barometer 30.22 in (1023.5 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 13 Feb 3:52 am CST
Extended Forecast for

Anna IL

  • Today

    Today: Sunny, with a high near 57. South wind 5 to 8 mph.

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 36. South wind 3 to 5 mph.

    Low: 36 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Rain, mainly after noon. High near 53. Calm wind becoming east southeast 5 to 8 mph in the morning. Chance of precipitation is 80%.

    High: 53 °F

    Chance Rain
    then Rain

  • Saturday Night

    Saturday Night: Rain. Low around 46. East southeast wind around 8 mph. Chance of precipitation is 100%.

    Low: 46 °F

    Rain

  • Sunday

    Sunday: Rain likely, mainly before noon. Mostly cloudy, with a high near 54. North northeast wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.

    High: 54 °F

    Rain Likely
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39. North northeast wind 5 to 8 mph becoming calm after midnight.

    Low: 39 °F

    Partly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 60. Calm wind becoming southeast around 5 mph.

    High: 60 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 44. Calm wind becoming south around 6 mph after midnight.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 63. South wind 6 to 14 mph, with gusts as high as 23 mph.

    High: 63 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 57. South wind 5 to 8 mph.
Tonight
Increasing clouds, with a low around 36. South wind 3 to 5 mph.
Saturday
Rain, mainly after noon. High near 53. Calm wind becoming east southeast 5 to 8 mph in the morning. Chance of precipitation is 80%.
Saturday Night
Rain. Low around 46. East southeast wind around 8 mph. Chance of precipitation is 100%.
Sunday
Rain likely, mainly before noon. Mostly cloudy, with a high near 54. North northeast wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.
Sunday Night
Partly cloudy, with a low around 39. North northeast wind 5 to 8 mph becoming calm after midnight.
Washington's Birthday
Mostly sunny, with a high near 60. Calm wind becoming southeast around 5 mph.
Monday Night
Mostly cloudy, with a low around 44. Calm wind becoming south around 6 mph after midnight.
Tuesday
Mostly cloudy, with a high near 63. South wind 6 to 14 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 55. South southwest wind around 15 mph, with gusts as high as 24 mph.
Wednesday
Partly sunny, with a high near 70. Southwest wind 14 to 16 mph, with gusts as high as 26 mph.
Wednesday Night
Mostly cloudy, with a low around 52. South southwest wind 9 to 13 mph, with gusts as high as 21 mph.
Thursday
Partly sunny, with a high near 67. South southwest wind 9 to 13 mph, with gusts as high as 21 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Anna IL
 37.45°N 89.24°W
Last Update:
3:16 am CST Feb 13, 2026
Forecast Valid:
4am CST Feb 13, 2026-6pm CST Feb 19, 2026
 
Forecast Discussion
 
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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