National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tracking Storm System Across the Eastern U.S.

A storm system will continue to produce widespread showers and thunderstorms as it progresses eastward across the central U.S. into the Northeast through the weekend. There are risks of severe thunderstorms and excessive rainfall on Saturday from the Ozarks into the mid-Mississippi River Valley with potential for damaging winds, large hail, tornadoes, and flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

63°F

17°C

Humidity 100%
Wind Speed SW 8 mph
Barometer 29.65 in (1003.9 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 18 Oct 10:52 pm CDT
Extended Forecast for

Ava IL

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 4am. Cloudy, with a low around 51. South southwest wind 6 to 16 mph becoming west northwest after midnight. Winds could gust as high as 24 mph.

    Low: 51 °F

    Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 63. Breezy, with a west northwest wind 17 to 22 mph, with gusts as high as 32 mph.

    High: 63 °F

    Breezy.
    Chance
    Showers then
    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 42. West wind 5 to 8 mph becoming light and variable after midnight.

    Low: 42 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 70. South wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 50. South wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 22 mph.

    Low: 50 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 67. West wind 10 to 16 mph, with gusts as high as 24 mph.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 41. West northwest wind 6 to 10 mph.

    Low: 41 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 63. West northwest wind 7 to 11 mph.

    High: 63 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 39. West wind around 5 mph becoming calm in the evening.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly after 4am. Cloudy, with a low around 51. South southwest wind 6 to 16 mph becoming west northwest after midnight. Winds could gust as high as 24 mph.
Sunday
A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 63. Breezy, with a west northwest wind 17 to 22 mph, with gusts as high as 32 mph.
Sunday Night
Clear, with a low around 42. West wind 5 to 8 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 70. South wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.
Monday Night
Clear, with a low around 50. South wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 22 mph.
Tuesday
Sunny, with a high near 67. West wind 10 to 16 mph, with gusts as high as 24 mph.
Tuesday Night
Clear, with a low around 41. West northwest wind 6 to 10 mph.
Wednesday
Sunny, with a high near 63. West northwest wind 7 to 11 mph.
Wednesday Night
Mostly clear, with a low around 39. West wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 68. Calm wind becoming south southwest 5 to 7 mph in the morning.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 47. South southeast wind around 6 mph.
Friday
A chance of showers. Partly sunny, with a high near 65. South southeast wind 6 to 9 mph.
Friday Night
A chance of showers. Mostly cloudy, with a low around 49. South southeast wind 5 to 7 mph.
Saturday
A slight chance of showers. Partly sunny, with a high near 64. South southeast wind 6 to 8 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:
11:15 pm CDT Oct 18, 2025
Forecast Valid:
11pm CDT Oct 18, 2025-6pm CDT Oct 25, 2025
 
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