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.

Fair

80°F

27°C

Humidity 76%
Wind Speed S 9 mph
Barometer 29.87 in (1011.2 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 21 Jun 9:52 am CDT
Extended Forecast for

Ava IL

  • Today

    Today: A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 87. Light south wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

    High: 87 °F

    Partly Sunny
    then Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Some of the storms could produce heavy rainfall. Low around 67. South southwest wind 8 to 14 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%.

    Low: 67 °F

    Heavy Rain
    then Showers
    Likely

  • Monday

    Monday: A slight chance of thunderstorms before 8am, then a slight chance of showers and thunderstorms between 8am and 10am. Mostly cloudy, with a high near 77. North northwest wind around 9 mph. Chance of precipitation is 20%.

    High: 77 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 61. North wind 5 to 8 mph becoming calm in the evening.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 82. Light east northeast wind.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 1am. Mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. Light south southwest wind.

    High: 84 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. Calm wind.

    High: 84 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 87. Light south wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Tonight
Showers and thunderstorms before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Some of the storms could produce heavy rainfall. Low around 67. South southwest wind 8 to 14 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%.
Monday
A slight chance of thunderstorms before 8am, then a slight chance of showers and thunderstorms between 8am and 10am. Mostly cloudy, with a high near 77. North northwest wind around 9 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 61. North wind 5 to 8 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 82. Light east northeast wind.
Tuesday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 62. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. Light south southwest wind.
Wednesday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 65. Calm wind.
Thursday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. Calm wind.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 64. Calm wind.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 85. Light and variable wind.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South southwest wind around 5 mph becoming calm in the evening.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. South southwest wind 5 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Ava IL
 37.89°N 89.5°W
Last Update:
10:31 am CDT Jun 21, 2026
Forecast Valid:
10am CDT Jun 21, 2026-6pm CDT Jun 27, 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