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.

Partly Cloudy

66°F

19°C

Humidity 90%
Wind Speed SW 9 mph
Barometer 29.92 in (1013.1 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 10 Mar 2:52 am CDT
Extended Forecast for

Ava IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 62. South southwest wind around 11 mph, with gusts as high as 18 mph.

    Low: 62 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 78. South southwest wind 10 to 17 mph, with gusts as high as 26 mph.

    High: 78 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms, mainly after 11pm. Cloudy, with a low around 64. South southwest wind 15 to 18 mph, with gusts as high as 29 mph.

    Low: 64 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 4pm, then showers likely. High near 70. South southwest wind 16 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%.

    High: 70 °F

    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 7pm. Mostly cloudy, with a low around 34. Breezy, with a north northwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.

    Low: 34 °F

    Chance
    Showers and
    Breezy then
    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 54. North northwest wind around 6 mph becoming west southwest in the afternoon.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43. Breezy, with a south wind 7 to 12 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 31 mph.

    Low: 43 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 64. West wind 9 to 18 mph, with gusts as high as 28 mph.

    High: 64 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40. North wind 5 to 7 mph becoming east after midnight.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 62. South southwest wind around 11 mph, with gusts as high as 18 mph.
Tuesday
Mostly cloudy, with a high near 78. South southwest wind 10 to 17 mph, with gusts as high as 26 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms, mainly after 11pm. Cloudy, with a low around 64. South southwest wind 15 to 18 mph, with gusts as high as 29 mph.
Wednesday
Showers and possibly a thunderstorm before 4pm, then showers likely. High near 70. South southwest wind 16 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%.
Wednesday Night
A 30 percent chance of showers before 7pm. Mostly cloudy, with a low around 34. Breezy, with a north northwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.
Thursday
Sunny, with a high near 54. North northwest wind around 6 mph becoming west southwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 43. Breezy, with a south wind 7 to 12 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 31 mph.
Friday
Partly sunny, with a high near 64. West wind 9 to 18 mph, with gusts as high as 28 mph.
Friday Night
Partly cloudy, with a low around 40. North wind 5 to 7 mph becoming east after midnight.
Saturday
Sunny, with a high near 68. East southeast wind 8 to 14 mph becoming south in the afternoon. Winds could gust as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 54. South wind 13 to 17 mph, with gusts as high as 26 mph.
Sunday
Showers and thunderstorms likely. Mostly cloudy, with a high near 65. Breezy, with a south southwest wind 18 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 33 mph.
Sunday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 25. Blustery, with a northwest wind 18 to 22 mph, with gusts as high as 31 mph.
Monday
Mostly sunny, with a high near 38. Northwest wind 13 to 15 mph, with gusts as high as 22 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:
2:26 am CDT Mar 10, 2026
Forecast Valid:
3am CDT Mar 10, 2026-6pm CDT Mar 16, 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