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.

Fog/Mist

48°F

9°C

Humidity 96%
Wind Speed E 5 mph
Barometer 30.13 in (1020.3 mb)
Dewpoint 47°F (8°C)
Visibility 2.50 mi
Wind Chill46°F (8°C)
Last update 20 Nov 3:52 am CST
Extended Forecast for

Ava IL

  • Overnight

    Overnight: A 20 percent chance of showers after 5am. Cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Showers. Patchy fog before 8am, then patchy fog after 5pm. High near 58. Southeast wind around 6 mph becoming calm in the afternoon. Chance of precipitation is 90%.

    High: 58 °F

    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: Showers and thunderstorms before 2am, then showers between 2am and 3am, then showers and possibly a thunderstorm after 3am. Patchy fog. Low around 53. Light east southeast wind. Chance of precipitation is 90%.

    Low: 53 °F

    Showers and
    Patchy Fog

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 67. East southeast wind 5 to 8 mph becoming west in the afternoon. Chance of precipitation is 100%.

    High: 67 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before midnight. Mostly cloudy, with a low around 47. North wind around 6 mph. Chance of precipitation is 60%.

    Low: 47 °F

    Showers
    Likely then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 58. North wind 3 to 6 mph.

    High: 58 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 62. Calm wind becoming southwest around 5 mph.

    High: 62 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers. Mostly cloudy, with a low around 43. Light and variable wind.

    Low: 43 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
A 20 percent chance of showers after 5am. Cloudy, with a low around 48. Calm wind.
Thursday
Showers. Patchy fog before 8am, then patchy fog after 5pm. High near 58. Southeast wind around 6 mph becoming calm in the afternoon. Chance of precipitation is 90%.
Thursday Night
Showers and thunderstorms before 2am, then showers between 2am and 3am, then showers and possibly a thunderstorm after 3am. Patchy fog. Low around 53. Light east southeast wind. Chance of precipitation is 90%.
Friday
Showers and possibly a thunderstorm. High near 67. East southeast wind 5 to 8 mph becoming west in the afternoon. Chance of precipitation is 100%.
Friday Night
Showers likely and possibly a thunderstorm before midnight. Mostly cloudy, with a low around 47. North wind around 6 mph. Chance of precipitation is 60%.
Saturday
Mostly sunny, with a high near 58. North wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 39. Calm wind.
Sunday
Mostly sunny, with a high near 62. Calm wind becoming southwest around 5 mph.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 43. Light and variable wind.
Monday
A chance of showers. Mostly cloudy, with a high near 59. Southeast wind 3 to 7 mph.
Monday Night
Showers likely. Mostly cloudy, with a low around 49. South southeast wind around 8 mph.
Tuesday
A chance of showers. Partly sunny, with a high near 61. South southwest wind 7 to 10 mph becoming west in the afternoon.
Tuesday Night
Partly cloudy, with a low around 41. West wind around 6 mph.
Wednesday
Partly sunny, with a high near 53. Northwest wind 6 to 9 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:
3:16 am CST Nov 20, 2025
Forecast Valid:
4am CST Nov 20, 2025-6pm CST Nov 26, 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