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

54°F

12°C

Humidity 49%
Wind Speed N 14 G 20 mph
Barometer 30.31 in (1026.5 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 5 Apr 11:52 am CDT
Extended Forecast for

Vergennes IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 60. Northwest wind 11 to 13 mph, with gusts as high as 20 mph.

    High: 60 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 39. Northwest wind around 6 mph becoming calm in the evening.

    Low: 39 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 66. Light west wind becoming northwest 5 to 9 mph in the morning.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 40. North northeast wind 6 to 8 mph.

    Low: 40 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 57. East northeast wind around 10 mph.

    High: 57 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40. East wind 6 to 8 mph.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. South wind 6 to 13 mph, with gusts as high as 18 mph.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55. South wind around 10 mph, with gusts as high as 18 mph.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 72. South wind 10 to 14 mph, with gusts as high as 21 mph.

    High: 72 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 60. Northwest wind 11 to 13 mph, with gusts as high as 20 mph.
Tonight
Clear, with a low around 39. Northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 66. Light west wind becoming northwest 5 to 9 mph in the morning.
Monday Night
Partly cloudy, with a low around 40. North northeast wind 6 to 8 mph.
Tuesday
Partly sunny, with a high near 57. East northeast wind around 10 mph.
Tuesday Night
Partly cloudy, with a low around 40. East wind 6 to 8 mph.
Wednesday
Mostly sunny, with a high near 74. South wind 6 to 13 mph, with gusts as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 55. South wind around 10 mph, with gusts as high as 18 mph.
Thursday
Mostly sunny, with a high near 72. South wind 10 to 14 mph, with gusts as high as 21 mph.
Thursday Night
A slight chance of showers after 1am. Partly cloudy, with a low around 58. South wind 6 to 8 mph.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 76. South southwest wind 6 to 10 mph.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Southeast wind around 6 mph.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 80. South wind 6 to 10 mph.
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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:
12:12 pm CDT Apr 5, 2026
Forecast Valid:
12pm CDT Apr 5, 2026-6pm CDT Apr 11, 2026
 
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Additional Resources

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Chance of Precipitation