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.

Fair

50°F

10°C

Humidity 47%
Wind Speed Calm
Barometer 29.80 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 25 Feb 10:52 am CST
Extended Forecast for

Dowell IL

  • Today

    Today: Mostly cloudy, with a high near 55. Light and variable wind becoming north northeast around 5 mph.

    High: 55 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 40 percent chance of showers, mainly between 10pm and 5am. Mostly cloudy, with a low around 37. East northeast wind around 6 mph.

    Low: 37 °F

    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 56. East northeast wind around 6 mph becoming calm in the afternoon.

    High: 56 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 35. Light and variable wind.

    Low: 35 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 66. Light south southwest wind becoming southwest 5 to 10 mph in the morning.

    High: 66 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 42. South wind 6 to 8 mph becoming west after midnight.

    Low: 42 °F

    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 67. West northwest wind 6 to 10 mph becoming southeast in the morning.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers before midnight. Partly cloudy, with a low around 34. Southeast wind 9 to 11 mph becoming north northeast in the evening. Winds could gust as high as 20 mph.

    Low: 34 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers after noon. Cloudy, with a high near 49. East northeast wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 49 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
Mostly cloudy, with a high near 55. Light and variable wind becoming north northeast around 5 mph.
Tonight
A 40 percent chance of showers, mainly between 10pm and 5am. Mostly cloudy, with a low around 37. East northeast wind around 6 mph.
Thursday
Mostly sunny, with a high near 56. East northeast wind around 6 mph becoming calm in the afternoon.
Thursday Night
Mostly clear, with a low around 35. Light and variable wind.
Friday
Sunny, with a high near 66. Light south southwest wind becoming southwest 5 to 10 mph in the morning.
Friday Night
Clear, with a low around 42. South wind 6 to 8 mph becoming west after midnight.
Saturday
Mostly sunny, with a high near 67. West northwest wind 6 to 10 mph becoming southeast in the morning.
Saturday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 34. Southeast wind 9 to 11 mph becoming north northeast in the evening. Winds could gust as high as 20 mph.
Sunday
A chance of showers after noon. Cloudy, with a high near 49. East northeast wind 10 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Rain likely, possibly mixed with snow showers. Cloudy, with a low around 32. Northeast wind around 10 mph, with gusts as high as 18 mph.
Monday
A chance of rain and snow showers. Cloudy, with a high near 44. Northeast wind 10 to 13 mph, with gusts as high as 20 mph.
Monday Night
A chance of showers. Cloudy, with a low around 32. East northeast wind 7 to 9 mph.
Tuesday
A chance of showers. Cloudy, with a high near 50. East wind 7 to 9 mph becoming west in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dowell IL
 37.95°N 89.25°W
Last Update:
9:46 am CST Feb 25, 2026
Forecast Valid:
11am CST Feb 25, 2026-6pm CST Mar 3, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation