National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

68°F

20°C

Humidity 23%
Wind Speed S 15 mph
Barometer 30.23 in (1023.4 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 29 Mar 12:52 pm CDT
Extended Forecast for

3 Miles SW Ava IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 68. South wind around 16 mph, with gusts as high as 25 mph.

    High: 68 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 56. South wind 10 to 14 mph, with gusts as high as 24 mph.

    Low: 56 °F

    Decreasing
    Clouds

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 79. South southwest wind 14 to 17 mph, with gusts as high as 29 mph.

    High: 79 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64. South southwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82. South southwest wind 15 to 18 mph, with gusts as high as 31 mph.

    High: 82 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 54. South southwest wind 9 to 15 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 65. South southwest wind around 9 mph. Chance of precipitation is 80%.

    High: 65 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Mostly cloudy, with a low around 51. Southeast wind around 10 mph, with gusts as high as 18 mph.

    Low: 51 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. Cloudy, with a high near 67. South southwest wind 10 to 13 mph, with gusts as high as 22 mph.

    High: 67 °F

    Showers

Detailed Forecast

This Afternoon
Partly sunny, with a high near 68. South wind around 16 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 56. South wind 10 to 14 mph, with gusts as high as 24 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 79. South southwest wind 14 to 17 mph, with gusts as high as 29 mph.
Monday Night
Mostly clear, with a low around 64. South southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday
Mostly sunny, with a high near 82. South southwest wind 15 to 18 mph, with gusts as high as 31 mph.
Tuesday Night
A 50 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 54. South southwest wind 9 to 15 mph, with gusts as high as 25 mph.
Wednesday
Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 65. South southwest wind around 9 mph. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 51. Southeast wind around 10 mph, with gusts as high as 18 mph.
Thursday
Showers and possibly a thunderstorm. Cloudy, with a high near 67. South southwest wind 10 to 13 mph, with gusts as high as 22 mph.
Thursday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 52. South southwest wind 9 to 11 mph, with gusts as high as 20 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 75. South wind around 9 mph.
Friday Night
A chance of showers. Mostly cloudy, with a low around 59. South southeast wind around 9 mph.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 71. South wind 9 to 13 mph, with gusts as high as 22 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Ava IL
 37.87°N 89.53°W
Last Update:
12:17 pm CDT Mar 29, 2026
Forecast Valid:
1pm CDT Mar 29, 2026-6pm CDT Apr 4, 2026
 
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Additional Resources

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Chance of Precipitation