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

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

62°F

17°C

Humidity 67%
Wind Speed SW 14 mph
Barometer 30.11 in (1019.5 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 10 Oct 12:51 pm CDT
Extended Forecast for

McHenry IL

  • This Afternoon

    This Afternoon: Isolated showers before 3pm. Mostly cloudy, with a high near 63. West southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 63 °F

    Isolated
    Showers

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 41. West southwest wind 5 to 10 mph becoming north in the evening.

    Low: 41 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Increasing clouds, with a high near 66. North northeast wind 5 to 10 mph.

    High: 66 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 47. Northeast wind around 5 mph becoming east southeast after midnight.

    Low: 47 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 69. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 69 °F

    Sunny

  • Sunday Night

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

    Low: 51 °F

    Partly Cloudy

  • Columbus Day

    Columbus Day: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Isolated showers before 3pm. Mostly cloudy, with a high near 63. West southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 41. West southwest wind 5 to 10 mph becoming north in the evening.
Saturday
Increasing clouds, with a high near 66. North northeast wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 47. Northeast wind around 5 mph becoming east southeast after midnight.
Sunday
Sunny, with a high near 69. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday Night
Partly cloudy, with a low around 51.
Columbus Day
Partly sunny, with a high near 72.
Monday Night
Mostly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 67.
Tuesday Night
Mostly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 42.
Thursday
Sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
McHenry IL
 42.34°N 88.26°W
Last Update:
1:26 pm CDT Oct 10, 2025
Forecast Valid:
1pm CDT Oct 10, 2025-6pm CDT Oct 16, 2025
 
Forecast Discussion
 
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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