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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

64°F

18°C

Humidity 56%
Wind Speed SW 15 mph
Barometer 29.82 in (1009.5 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 4 May 1:52 am CDT
Extended Forecast for

Anna ILSimilar City Names

Lake Wind Advisory May 4, 10:00am until May 4, 08:00pm
Click here for hazard details and duration
Lake Wind Advisory

  • Overnight

    Overnight: Partly cloudy, with a low around 55. South southwest wind 7 to 9 mph.

    Low: 55 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80. Breezy, with a southwest wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 80 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 58. South southwest wind 10 to 15 mph, with gusts as high as 26 mph.

    Low: 58 °F

    Partly Cloudy
    then Chance
    T-storms

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 67. South southwest wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.

    High: 67 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 1am, then showers likely. Low around 47. West northwest wind around 11 mph becoming north after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 90%.

    Low: 47 °F

    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers. Partly sunny, with a high near 61. North northeast wind around 10 mph.

    High: 61 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 46. North wind around 8 mph.

    Low: 46 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 64. Northwest wind 7 to 9 mph.

    High: 64 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44. Light and variable wind.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 55. South southwest wind 7 to 9 mph.
Monday
Mostly sunny, with a high near 80. Breezy, with a southwest wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph.
Monday Night
A 30 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 58. South southwest wind 10 to 15 mph, with gusts as high as 26 mph.
Tuesday
Showers and possibly a thunderstorm. High near 67. South southwest wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Low around 47. West northwest wind around 11 mph becoming north after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 61. North northeast wind around 10 mph.
Wednesday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 46. North wind around 8 mph.
Thursday
Mostly sunny, with a high near 64. Northwest wind 7 to 9 mph.
Thursday Night
Mostly clear, with a low around 44. Light and variable wind.
Friday
Sunny, with a high near 72. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 51. South southwest wind 3 to 7 mph.
Saturday
Mostly sunny, with a high near 74. West wind 5 to 8 mph becoming north northwest in the morning.
Saturday Night
A slight chance of showers. Mostly clear, with a low around 53. Light and variable wind becoming south southeast around 5 mph after midnight.
Sunday
A chance of showers. Mostly sunny, with a high near 76. South southeast wind 5 to 9 mph becoming west in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Anna ILSimilar City Names
 37.45°N 89.24°W
Last Update:
1:51 am CDT May 4, 2026
Forecast Valid:
2am CDT May 4, 2026-6pm CDT May 10, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation