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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Mostly Cloudy

66°F

19°C

Humidity 87%
Wind Speed SW 17 G 25 mph
Barometer 29.90 in (1012.4 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 9 Mar 10:52 pm CDT
Extended Forecast for

Anna IL

  • Tonight

    Tonight: Mostly cloudy, with a steady temperature around 65. South southwest wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 65 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers after 4pm. Mostly cloudy, with a high near 77. South southwest wind 9 to 15 mph, with gusts as high as 25 mph.

    High: 77 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    Low: 64 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 71. South southwest wind around 17 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 100%.

    High: 71 °F

    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 35. North wind 10 to 17 mph, with gusts as high as 28 mph.

    Low: 35 °F

    Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 54. North wind around 7 mph becoming west in the afternoon.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 41. South wind 5 to 14 mph, with gusts as high as 23 mph.

    Low: 41 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 64. South southwest wind 9 to 13 mph, with gusts as high as 23 mph.

    High: 64 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 43. Southwest wind around 6 mph becoming east northeast after midnight.

    Low: 43 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a steady temperature around 65. South southwest wind 9 to 11 mph, with gusts as high as 21 mph.
Tuesday
A 20 percent chance of showers after 4pm. Mostly cloudy, with a high near 77. South southwest wind 9 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Wednesday
Showers and possibly a thunderstorm. High near 71. South southwest wind around 17 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 100%.
Wednesday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 35. North wind 10 to 17 mph, with gusts as high as 28 mph.
Thursday
Sunny, with a high near 54. North wind around 7 mph becoming west in the afternoon.
Thursday Night
Partly cloudy, with a low around 41. South wind 5 to 14 mph, with gusts as high as 23 mph.
Friday
Partly sunny, with a high near 64. South southwest wind 9 to 13 mph, with gusts as high as 23 mph.
Friday Night
Mostly cloudy, with a low around 43. Southwest wind around 6 mph becoming east northeast after midnight.
Saturday
Sunny, with a high near 70. East southeast wind 7 to 11 mph becoming south in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Mostly clear, with a low around 54. South wind 10 to 13 mph, with gusts as high as 22 mph.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 67. South southwest wind 14 to 17 mph becoming west in the afternoon. Winds could gust as high as 29 mph.
Sunday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 32. North northwest wind 13 to 16 mph, with gusts as high as 24 mph.
Monday
Mostly sunny, with a high near 44. North northwest wind around 11 mph, with gusts as high as 20 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Anna IL
 37.45°N 89.24°W
Last Update:
7:51 pm CDT Mar 9, 2026
Forecast Valid:
11pm CDT Mar 9, 2026-6pm CDT Mar 16, 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