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.

A Few Clouds and Breezy

72°F

22°C

Humidity 73%
Wind Speed S 21 G 33 mph
Barometer 29.85 in (1010.4 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 2 Apr 6:52 pm CDT
Extended Forecast for

Anna IL

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South southwest wind 10 to 16 mph, with gusts as high as 29 mph.

    Low: 65 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Showers and thunderstorms likely, mainly before 1pm. Partly sunny, with a high near 80. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. South wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    Low: 62 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 4pm, then showers likely. Some of the storms could produce heavy rainfall. High near 68. South southwest wind 11 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 100%.

    High: 68 °F

    Heavy Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41. Northwest wind 6 to 9 mph.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 60. Northwest wind 6 to 10 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 64. Calm wind becoming north northwest 5 to 7 mph in the morning.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 39. North wind around 6 mph.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Tonight
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South southwest wind 10 to 16 mph, with gusts as high as 29 mph.
Friday
Showers and thunderstorms likely, mainly before 1pm. Partly sunny, with a high near 80. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. South wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Saturday
Showers and possibly a thunderstorm before 4pm, then showers likely. Some of the storms could produce heavy rainfall. High near 68. South southwest wind 11 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 100%.
Saturday Night
Partly cloudy, with a low around 41. Northwest wind 6 to 9 mph.
Sunday
Sunny, with a high near 60. Northwest wind 6 to 10 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 64. Calm wind becoming north northwest 5 to 7 mph in the morning.
Monday Night
Mostly clear, with a low around 39. North wind around 6 mph.
Tuesday
Mostly sunny, with a high near 57. Northeast wind around 9 mph.
Tuesday Night
Mostly clear, with a low around 37. East northeast wind around 6 mph.
Wednesday
Sunny, with a high near 67. South wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 49. South wind around 8 mph.
Thursday
Sunny, with a high near 74. South wind 8 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:
6:46 pm CDT Apr 2, 2026
Forecast Valid:
7pm CDT Apr 2, 2026-6pm CDT Apr 9, 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