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

79°F

26°C

Humidity 38%
Wind Speed SW 6 mph
Barometer 29.98 in (1015.0 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 7 Oct 11:52 am CDT
Extended Forecast for

5 Miles NNW Vergennes IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 88. West southwest wind 6 to 8 mph.

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 58. Southwest wind around 5 mph becoming calm in the evening.

    Low: 58 °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 56. Calm wind.

    Low: 56 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 88. Calm wind becoming south 5 to 8 mph in the morning.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. South southeast wind 3 to 5 mph.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 83. Light south southeast wind becoming southeast 5 to 10 mph in the morning.

    High: 83 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. East northeast wind around 7 mph.

    Low: 60 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers before 1pm. Partly sunny, with a high near 77. Northeast wind 8 to 11 mph becoming west northwest in the afternoon.

    High: 77 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 88. West southwest wind 6 to 8 mph.
Tonight
Clear, with a low around 58. 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 56. Calm wind.
Friday
Sunny, with a high near 88. Calm wind becoming south 5 to 8 mph in the morning.
Friday Night
Mostly clear, with a low around 60. South southeast wind 3 to 5 mph.
Saturday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 83. Light south southeast wind becoming southeast 5 to 10 mph in the morning.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. East northeast wind around 7 mph.
Sunday
A chance of showers before 1pm. Partly sunny, with a high near 77. Northeast wind 8 to 11 mph becoming west northwest in the afternoon.
Sunday Night
Partly cloudy, with a low around 58. Light west southwest wind.
Columbus Day
Mostly sunny, with a high near 86. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Monday Night
Mostly clear, with a low around 61. South wind around 6 mph.
Tuesday
Sunny, with a high near 79. West southwest wind 5 to 11 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNW Vergennes IL
 37.97°N 89.36°W
Last Update:
12:11 pm CDT Oct 7, 2026
Forecast Valid:
12pm CDT Oct 7, 2026-6pm CDT Oct 13, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation