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 96%
Wind Speed Calm
Barometer 29.97 in (1014.7 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 7 Oct 2:52 am CDT
Extended Forecast for

Dowell IL

  • Overnight

    Overnight: Clear, with a low around 50. Calm wind.

    Low: 50 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87. Light south southwest wind becoming west southwest 5 to 9 mph in the morning.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 56. Southwest wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 85. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 54. Calm wind.

    Low: 54 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 87. Calm wind becoming south southeast 5 to 8 mph in the morning.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. Light south southeast wind.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers after 1pm. Mostly sunny, with a high near 83. Light south wind becoming south southeast 5 to 10 mph in the morning.

    High: 83 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 58. Southeast wind around 7 mph becoming east northeast after midnight.

    Low: 58 °F

    Showers
    Likely

Detailed Forecast

Overnight
Clear, with a low around 50. Calm wind.
Wednesday
Sunny, with a high near 87. Light south southwest wind becoming west southwest 5 to 9 mph in the morning.
Wednesday Night
Clear, with a low around 56. Southwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 85. Calm wind becoming north northeast around 5 mph in the afternoon.
Thursday Night
Clear, with a low around 54. Calm wind.
Friday
Sunny, with a high near 87. Calm wind becoming south southeast 5 to 8 mph in the morning.
Friday Night
Mostly clear, with a low around 59. Light south southeast wind.
Saturday
A chance of showers after 1pm. Mostly sunny, with a high near 83. Light south wind becoming south southeast 5 to 10 mph in the morning.
Saturday Night
A chance of showers, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 58. Southeast wind around 7 mph becoming east northeast after midnight.
Sunday
A chance of showers, mainly before 1pm. Partly sunny, with a high near 78. East northeast wind 9 to 13 mph becoming north northwest in the afternoon.
Sunday Night
Partly cloudy, with a low around 57. North wind around 5 mph becoming calm in the evening.
Columbus Day
Mostly sunny, with a high near 82. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 58. South wind around 5 mph.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 82. Southwest wind 5 to 11 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dowell IL
 37.92°N 89.22°W
Last Update:
3:36 am CDT Oct 7, 2026
Forecast Valid:
3am CDT Oct 7, 2026-6pm CDT Oct 13, 2026
 
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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