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.

Mostly Cloudy

67°F

19°C

Humidity 79%
Wind Speed S 10 mph
Barometer 29.97 in (1014.6 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 1 Apr 6:52 am CDT
Extended Forecast for

Anna IL

  • Today

    Today: Showers and thunderstorms likely before 4pm, then a chance of showers. Partly sunny, with a high near 79. Southwest wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    High: 79 °F

    Chance
    Showers then
    Showers
    Likely

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 8pm. Mostly cloudy, with a low around 66. South wind 9 to 14 mph, with gusts as high as 23 mph.

    Low: 66 °F

    Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79. Breezy, with a south wind 15 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 60%.

    High: 79 °F

    Breezy.
    Mostly Cloudy
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. South wind 10 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 70%.

    Low: 64 °F

    Showers
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 80. South wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. South wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    Low: 61 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 68. South wind 11 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%.

    High: 68 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers, mainly before 1am. Partly cloudy, with a low around 40. Northwest wind around 11 mph, with gusts as high as 20 mph.

    Low: 40 °F

    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 58. North northwest wind 9 to 13 mph, with gusts as high as 21 mph.

    High: 58 °F

    Sunny

Detailed Forecast

Today
Showers and thunderstorms likely before 4pm, then a chance of showers. Partly sunny, with a high near 79. Southwest wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Tonight
A 30 percent chance of showers, mainly before 8pm. Mostly cloudy, with a low around 66. South wind 9 to 14 mph, with gusts as high as 23 mph.
Thursday
Showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79. Breezy, with a south wind 15 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. South wind 10 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 70%.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 80. South wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. South wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Saturday
Showers and possibly a thunderstorm. High near 68. South wind 11 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%.
Saturday Night
A chance of showers, mainly before 1am. Partly cloudy, with a low around 40. Northwest wind around 11 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 58. North northwest wind 9 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 36. North wind 5 to 9 mph becoming light north northeast after midnight.
Monday
Sunny, with a high near 64. Calm wind becoming east around 6 mph in the morning.
Monday Night
Partly cloudy, with a low around 42. Light west southwest wind.
Tuesday
Sunny, with a high near 62. North wind 5 to 8 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:
6:42 am CDT Apr 1, 2026
Forecast Valid:
7am CDT Apr 1, 2026-6pm CDT Apr 7, 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