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

31°F

-1°C

Humidity 56%
Wind Speed NW 9 mph
Barometer 30.30 in (1026.3 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 11 Jan 3:52 am CST
Extended Forecast for

Ava IL

  • Today

    Today: Sunny, with a high near 38. Northwest wind 6 to 15 mph, with gusts as high as 30 mph.

    High: 38 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 26. Calm wind becoming south southwest 5 to 7 mph after midnight.

    Low: 26 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 51. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35. South southwest wind 6 to 10 mph.

    Low: 35 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 59. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.

    High: 59 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39. West wind 7 to 10 mph.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers after noon. Partly sunny, with a high near 45. Northwest wind 9 to 16 mph, with gusts as high as 25 mph.

    High: 45 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 19. North northwest wind 9 to 14 mph, with gusts as high as 22 mph.

    Low: 19 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 37. North northwest wind 5 to 9 mph becoming south southwest in the afternoon.

    High: 37 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 38. Northwest wind 6 to 15 mph, with gusts as high as 30 mph.
Tonight
Clear, with a low around 26. Calm wind becoming south southwest 5 to 7 mph after midnight.
Monday
Sunny, with a high near 51. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Monday Night
Partly cloudy, with a low around 35. South southwest wind 6 to 10 mph.
Tuesday
Mostly sunny, with a high near 59. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 39. West wind 7 to 10 mph.
Wednesday
A 20 percent chance of showers after noon. Partly sunny, with a high near 45. Northwest wind 9 to 16 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 19. North northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Thursday
Mostly sunny, with a high near 37. North northwest wind 5 to 9 mph becoming south southwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 27. South wind 6 to 10 mph, with gusts as high as 18 mph.
Friday
Partly sunny, with a high near 43. West wind 10 to 14 mph, with gusts as high as 22 mph.
Friday Night
Mostly cloudy, with a low around 24. West wind 8 to 10 mph.
Saturday
Partly sunny, with a high near 34. West northwest wind 8 to 13 mph, with gusts as high as 20 mph.
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:
3:16 am CST Jan 11, 2026
Forecast Valid:
4am CST Jan 11, 2026-6pm CST Jan 17, 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