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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Dowell IL

  • Overnight

    Overnight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a steady temperature around 62. North wind around 7 mph. Chance of precipitation is 60%.

    Low: 62 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms likely before noon, then a slight chance of showers between noon and 1pm. Cloudy, with a high near 68. North northeast wind 8 to 10 mph. Chance of precipitation is 60%.

    High: 68 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 55. Northeast wind 5 to 9 mph.

    Low: 55 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 74. Northeast wind 7 to 9 mph.

    High: 74 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm, mainly after 4am. Mostly cloudy, with a low around 59. East northeast wind 7 to 9 mph. Chance of precipitation is 60%.

    Low: 59 °F

    Mostly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 75. East wind around 8 mph becoming south southeast in the afternoon. Chance of precipitation is 90%.

    High: 75 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 62. West southwest wind 3 to 7 mph. Chance of precipitation is 40%.

    Low: 62 °F

    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. South southwest wind 3 to 5 mph.

    High: 82 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64. Light south wind.

    Low: 64 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Overnight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a steady temperature around 62. North wind around 7 mph. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms likely before noon, then a slight chance of showers between noon and 1pm. Cloudy, with a high near 68. North northeast wind 8 to 10 mph. Chance of precipitation is 60%.
Wednesday Night
Mostly cloudy, with a low around 55. Northeast wind 5 to 9 mph.
Thursday
Mostly cloudy, with a high near 74. Northeast wind 7 to 9 mph.
Thursday Night
Showers likely and possibly a thunderstorm, mainly after 4am. Mostly cloudy, with a low around 59. East northeast wind 7 to 9 mph. Chance of precipitation is 60%.
Friday
Showers and possibly a thunderstorm. High near 75. East wind around 8 mph becoming south southeast in the afternoon. Chance of precipitation is 90%.
Friday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 62. West southwest wind 3 to 7 mph. Chance of precipitation is 40%.
Saturday
A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. South southwest wind 3 to 5 mph.
Saturday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64. Light south wind.
Sunday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. Light southwest wind.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Light and variable wind.
Memorial Day
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 82. Calm wind becoming east southeast around 6 mph in the morning.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Southeast wind around 5 mph becoming calm in the evening.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. South southeast wind 3 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Dowell IL
 37.95°N 89.25°W
Last Update:
3:01 am CDT May 20, 2026
Forecast Valid:
4am CDT May 20, 2026-6pm CDT May 26, 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