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.

A Few Clouds

69°F

21°C

Humidity 68%
Wind Speed S 12 G 22 mph
Barometer 30.01 in (1016.2 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 3 Mar 4:52 pm CST
Extended Forecast for

Ava IL

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 56. South southeast wind around 6 mph. Chance of precipitation is 70%.

    Low: 56 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms before 2pm, then showers and possibly a thunderstorm, mainly after 2pm. High near 69. South wind 6 to 9 mph becoming west southwest in the afternoon. Chance of precipitation is 80%.

    High: 69 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 57. South southwest wind 7 to 9 mph. Chance of precipitation is 90%.

    Low: 57 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 9am, then showers between 9am and noon, then a chance of showers and thunderstorms after noon. High near 69. Southwest wind 7 to 10 mph. Chance of precipitation is 80%.

    High: 69 °F

    Showers then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59. South wind 6 to 9 mph.

    Low: 59 °F

    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers before noon. Mostly sunny, with a high near 77. South wind 10 to 17 mph, with gusts as high as 26 mph.

    High: 77 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 60. South wind 11 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.

    Low: 60 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before noon, then a chance of showers. Mostly cloudy, with a high near 69. South southwest wind 7 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 69 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A slight chance of showers after midnight. Partly cloudy, with a low around 45. North northwest wind 3 to 6 mph.

    Low: 45 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 56. South southeast wind around 6 mph. Chance of precipitation is 70%.
Wednesday
Showers and thunderstorms before 2pm, then showers and possibly a thunderstorm, mainly after 2pm. High near 69. South wind 6 to 9 mph becoming west southwest in the afternoon. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 57. South southwest wind 7 to 9 mph. Chance of precipitation is 90%.
Thursday
Showers and possibly a thunderstorm before 9am, then showers between 9am and noon, then a chance of showers and thunderstorms after noon. High near 69. Southwest wind 7 to 10 mph. Chance of precipitation is 80%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59. South wind 6 to 9 mph.
Friday
A 20 percent chance of showers before noon. Mostly sunny, with a high near 77. South wind 10 to 17 mph, with gusts as high as 26 mph.
Friday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 60. South wind 11 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.
Saturday
Showers likely and possibly a thunderstorm before noon, then a chance of showers. Mostly cloudy, with a high near 69. South southwest wind 7 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph.
Saturday Night
A slight chance of showers after midnight. Partly cloudy, with a low around 45. North northwest wind 3 to 6 mph.
Sunday
A slight chance of showers before noon. Mostly sunny, with a high near 66. Light and variable wind becoming southwest 5 to 7 mph in the morning.
Sunday Night
A slight chance of showers. Mostly clear, with a low around 49. Southwest wind around 6 mph.
Monday
A slight chance of showers. Sunny, with a high near 73. South southwest wind 6 to 10 mph.
Monday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 58. South southwest wind 9 to 11 mph, with gusts as high as 20 mph.
Tuesday
A chance of showers. Mostly cloudy, with a high near 76. South southwest wind 11 to 16 mph, with gusts as high as 26 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ava IL
 37.89°N 89.5°W
Last Update:
4:12 pm CST Mar 3, 2026
Forecast Valid:
5pm CST Mar 3, 2026-6pm CDT Mar 10, 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