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.

Rain Fog/Mist

61°F

16°C

Humidity 97%
Wind Speed SW 16 G 29 mph
Barometer 29.96 in (1014.3 mb)
Dewpoint 60°F (16°C)
Visibility 1.75 mi
Last update 4 Apr 7:52 am CDT
Extended Forecast for

Anna IL

  • Today

    Today: Showers and thunderstorms before 4pm, then a chance of showers. Temperature falling to around 59 by 4pm. Breezy, with a light and variable wind becoming northwest 17 to 22 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%.

    High: 67 °F⇓

    Showers and
    Breezy

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 40. Northwest wind 6 to 9 mph.

    Low: 40 °F

    Gradual
    Clearing

  • Sunday

    Sunday: Sunny, with a high near 60. Northwest wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 38. North northwest wind around 6 mph becoming calm in the evening.

    Low: 38 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 65. Calm wind becoming north northwest 5 to 8 mph in the morning.

    High: 65 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 40. North wind 6 to 8 mph.

    Low: 40 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 57. East northeast wind around 9 mph.

    High: 57 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 39. East southeast wind around 6 mph.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. South wind 6 to 10 mph.

    High: 72 °F

    Mostly Sunny

Detailed Forecast

Today
Showers and thunderstorms before 4pm, then a chance of showers. Temperature falling to around 59 by 4pm. Breezy, with a light and variable wind becoming northwest 17 to 22 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%.
Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 40. Northwest wind 6 to 9 mph.
Sunday
Sunny, with a high near 60. Northwest wind 6 to 10 mph, with gusts as high as 18 mph.
Sunday Night
Clear, with a low around 38. North northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 65. Calm wind becoming north northwest 5 to 8 mph in the morning.
Monday Night
Partly cloudy, with a low around 40. North wind 6 to 8 mph.
Tuesday
Mostly sunny, with a high near 57. East northeast wind around 9 mph.
Tuesday Night
Partly cloudy, with a low around 39. East southeast wind around 6 mph.
Wednesday
Mostly sunny, with a high near 72. South wind 6 to 10 mph.
Wednesday Night
Mostly clear, with a low around 52. South wind around 8 mph.
Thursday
Sunny, with a high near 75. South wind 8 to 13 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 54. South southeast wind around 8 mph.
Friday
Mostly sunny, with a high near 77. South wind 8 to 13 mph, with gusts as high as 21 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Anna IL
 37.45°N 89.24°W
Last Update:
7:42 am CDT Apr 4, 2026
Forecast Valid:
8am CDT Apr 4, 2026-6pm CDT Apr 10, 2026
 
Forecast Discussion
 
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Additional Resources

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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