Areas of Excessive Rainfall and Severe Thunderstorms; Fire Weather Concerns in the Northern Plains and Four Corners Region

Widespread showers and thunderstorms may bring areas of flash flooding across much of the Southern Plains into the Gulf Coast region and the upper Ohio River Valley into the Mid-Atlantic. A large Pacific storm will bring widespread rain, gusty winds, and mountain snow to California and the Great Basin. Fire weather concerns expected in the Northern Plains and the Four Corners region. Read More >

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Overcast

69°F

21°C

Humidity 100%
Wind Speed Calm
Barometer 29.92 in (1012.8 mb)
Dewpoint 69°F (21°C)
Visibility 9.00 mi
Last update 26 May 11:52 pm CDT
Extended Forecast for

Ava IL

  • Overnight

    Overnight: A chance of showers before 3am, then a slight chance of showers after 5am.  Patchy fog between 3am and 4am.  Otherwise, mostly cloudy, with a low around 63. Calm wind.  Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms between 1pm and 4pm.  Partly sunny, with a high near 81. Light west wind.  Chance of precipitation is 20%.

    High: 81 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms before 7pm.  Patchy fog between 2am and 4am.  Otherwise, partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Chance
    T-storms then
    Patchy Fog

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 82. East northeast wind 3 to 8 mph.

    High: 82 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am.  Mostly cloudy, with a low around 63. East northeast wind 5 to 7 mph.  Chance of precipitation is 20%.

    Low: 63 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm.  Mostly cloudy, with a high near 77. East wind around 6 mph.  Chance of precipitation is 30%.

    High: 77 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms, then a chance of showers after 10pm.  Mostly cloudy, with a low around 61. East northeast wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 30%.

    Low: 61 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 80. East northeast wind 3 to 6 mph.

    High: 80 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61. East northeast wind around 6 mph.

    Low: 61 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of showers before 3am, then a slight chance of showers after 5am. Patchy fog between 3am and 4am. Otherwise, mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 30%.
Wednesday
A slight chance of showers and thunderstorms between 1pm and 4pm. Partly sunny, with a high near 81. Light west wind. Chance of precipitation is 20%.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 7pm. Patchy fog between 2am and 4am. Otherwise, partly cloudy, with a low around 63. Calm wind.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. East northeast wind 3 to 8 mph.
Thursday Night
A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 63. East northeast wind 5 to 7 mph. Chance of precipitation is 20%.
Friday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 77. East wind around 6 mph. Chance of precipitation is 30%.
Friday Night
A slight chance of showers and thunderstorms, then a chance of showers after 10pm. Mostly cloudy, with a low around 61. East northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Saturday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80. East northeast wind 3 to 6 mph.
Saturday Night
Partly cloudy, with a low around 61. East northeast wind around 6 mph.
Sunday
Mostly sunny, with a high near 79. East northeast wind around 7 mph.
Sunday Night
Partly cloudy, with a low around 58. East northeast wind 3 to 7 mph.
Monday
Sunny, with a high near 80. Northeast wind 3 to 8 mph.
Monday Night
Mostly clear, with a low around 57. Northeast wind 3 to 7 mph.
Tuesday
Sunny, with a high near 80. East northeast wind 5 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Ava IL
 37.89°N 89.5°W
12:16 am CDT May 27, 2026
1am CDT May 27, 2026-6pm CDT Jun 2, 2026
 
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Additional Resources

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Hourly Weather Forecast

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