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

67°F

19°C

Humidity 44%
Wind Speed S 3 mph
Barometer 30.12 in (1019.9 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 10 Nov 10:52 am CST
Extended Forecast for

Vergennes IL

  • Today

    Today: Sunny, with a high near 73. West wind around 5 mph becoming calm in the afternoon.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 46. Calm wind.

    Low: 46 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Mostly cloudy through mid morning, then gradual clearing, with a high near 73. Light and variable wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

    High: 73 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 43. Northwest wind around 11 mph.

    Low: 43 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 53. North northwest wind 11 to 17 mph, with gusts as high as 22 mph.

    High: 53 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 31. North northwest wind 5 to 11 mph.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 47. North northwest wind 7 to 14 mph.

    High: 47 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26. North northwest wind around 5 mph becoming calm in the evening.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 50. Calm wind.

    High: 50 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 73. West wind around 5 mph becoming calm in the afternoon.
Tonight
Mostly clear, with a low around 46. Calm wind.
Veterans Day
Mostly cloudy through mid morning, then gradual clearing, with a high near 73. Light and variable wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 43. Northwest wind around 11 mph.
Thursday
Mostly sunny, with a high near 53. North northwest wind 11 to 17 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 31. North northwest wind 5 to 11 mph.
Friday
Sunny, with a high near 47. North northwest wind 7 to 14 mph.
Friday Night
Mostly clear, with a low around 26. North northwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 50. Calm wind.
Saturday Night
Mostly clear, with a low around 29. Calm wind.
Sunday
Mostly sunny, with a high near 54. Calm wind becoming south southeast 5 to 7 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 34. Light east southeast wind.
Monday
Mostly sunny, with a high near 57. Calm wind becoming east southeast around 6 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Vergennes IL
 37.9°N 89.33°W
Last Update:
10:11 am CST Nov 10, 2026
Forecast Valid:
11am CST Nov 10, 2026-6pm CST Nov 16, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation