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

84°F

29°C

Humidity 38%
Wind Speed Vrbl 5 mph
Barometer 30.02 in (1016.2 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 19 Jun 2:52 pm CDT
Extended Forecast for

Ava IL

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 85. Calm wind.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 85. Light west southwest wind.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 66. Calm wind.

    Low: 66 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 84. South southwest wind 5 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.

    High: 84 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 68. South southwest wind 11 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 100%.

    Low: 68 °F

    Showers

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 79. Northwest wind 8 to 10 mph.

    High: 79 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 61. North wind 5 to 9 mph becoming calm in the evening.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80. Light north northeast wind.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Juneteenth
Mostly sunny, with a high near 85. Calm wind.
Tonight
Mostly cloudy, with a low around 63. Calm wind.
Saturday
Mostly sunny, with a high near 85. Light west southwest wind.
Saturday Night
A 30 percent chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 66. Calm wind.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 84. South southwest wind 5 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm. Low around 68. South southwest wind 11 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 100%.
Monday
A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 79. Northwest wind 8 to 10 mph.
Monday Night
Partly cloudy, with a low around 61. North wind 5 to 9 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 80. Light north northeast wind.
Tuesday Night
Partly cloudy, with a low around 62. Calm wind.
Wednesday
Sunny, with a high near 82. Light west northwest wind.
Wednesday Night
Mostly clear, with a low around 62. Light west northwest wind.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ava IL
 37.89°N 89.5°W
Last Update:
3:01 pm CDT Jun 19, 2026
Forecast Valid:
4pm CDT Jun 19, 2026-6pm CDT Jun 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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