National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall Areas Today; Tropical Storm Jerry Forms

Heavy to excessive rainfall is possible today and tonight ahead of and along a cold front crossing portions of Kentucky, middle Tennessee, the Ohio Valley and New Mexico. Tropical Storm Jerry, the tenth named storm of the 2025 season, has formed over the central tropical Atlantic. Jerry is expected to be near or north of the northern Leeward Islands on Thursday and Friday. Read More >

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

64°F

18°C

Humidity 50%
Wind Speed E 5 mph
Barometer 30.13 in (1019.8 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 7 Oct 5:51 pm CDT
Extended Forecast for

McHenry IL

  • Tonight

    Tonight: Clear, with a low around 41. North wind around 5 mph, with gusts as high as 10 mph.

    Low: 41 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 62. North wind 5 to 10 mph becoming east northeast in the afternoon.

    High: 62 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 40. East northeast wind around 5 mph.

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 64. Light southeast wind increasing to 5 to 10 mph in the morning.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 42. South wind around 5 mph.

    Low: 42 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 41. North wind around 5 mph, with gusts as high as 10 mph.
Wednesday
Sunny, with a high near 62. North wind 5 to 10 mph becoming east northeast in the afternoon.
Wednesday Night
Mostly clear, with a low around 40. East northeast wind around 5 mph.
Thursday
Sunny, with a high near 64. Light southeast wind increasing to 5 to 10 mph in the morning.
Thursday Night
Mostly clear, with a low around 42. South wind around 5 mph.
Friday
Mostly sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 70.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Mostly cloudy, with a low around 56.
Columbus Day
Partly sunny, with a high near 74.
Monday Night
A chance of showers. Mostly cloudy, with a low around 56.
Tuesday
Partly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
McHenry IL
 42.32°N 88.26°W
Last Update:
4:41 pm CDT Oct 7, 2025
Forecast Valid:
6pm CDT Oct 7, 2025-6pm CDT Oct 14, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation