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Unsettled Across the West; Increasingly Rainy with a Few Storms in the South

A frontal system will bring heavy precipitation, including mountain snowfall to much of the Pacific Northwest, northern California, and portions of the Rockies through Tuesday. Elsewhere, wet weather will return to much of the South with locally heavy rainfall; a few strong to severe thunderstorms will also be possible in this region by Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast with Haze

42°F

6°C

Humidity 79%
Wind Speed W 9 mph
Barometer 29.90 in (1013.4 mb)
Dewpoint 36°F (2°C)
Visibility 5.00 mi
Wind Chill37°F (3°C)
Last update 18 Dec 9:55 am CST
Extended Forecast for

McHenry IL

  • Today

    Today: Mostly cloudy, with a high near 42. West southwest wind 10 to 15 mph.

    Mostly Cloudy

    High: 42 °F

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Mostly Cloudy

    Low: 36 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 46. West wind around 10 mph, with gusts as high as 15 mph.

    Mostly Sunny

    High: 46 °F

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 24. West wind around 5 mph becoming north northwest after midnight.

    Mostly Clear

    Low: 24 °F

  • Wednesday

    Wednesday: Partly sunny, with a high near 36. North wind around 5 mph becoming east northeast in the afternoon.

    Partly Sunny

    High: 36 °F

  • Wednesday
    Night

    Wednesday Night: Mostly cloudy, with a low around 26.

    Mostly Cloudy

    Low: 26 °F

  • Thursday

    Thursday: Mostly cloudy, with a high near 41.

    Mostly Cloudy

    High: 41 °F

  • Thursday
    Night

    Thursday Night: A chance of showers, mainly after midnight.  Cloudy, with a low around 36.

    Chance
    Showers

    Low: 36 °F

  • Friday

    Friday: A chance of showers.  Cloudy, with a high near 48.

    Chance
    Showers

    High: 48 °F

Detailed Forecast

Today
Mostly cloudy, with a high near 42. West southwest wind 10 to 15 mph.
Tonight
Mostly cloudy, with a low around 36. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 46. West wind around 10 mph, with gusts as high as 15 mph.
Tuesday Night
Mostly clear, with a low around 24. West wind around 5 mph becoming north northwest after midnight.
Wednesday
Partly sunny, with a high near 36. North wind around 5 mph becoming east northeast in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
Mostly cloudy, with a high near 41.
Thursday Night
A chance of showers, mainly after midnight. Cloudy, with a low around 36.
Friday
A chance of showers. Cloudy, with a high near 48.
Friday Night
A chance of rain before 1am, then a chance of rain and snow between 1am and 2am, then a chance of snow after 2am. Mostly cloudy, with a low around 26.
Saturday
Partly sunny, with a high near 31.
Saturday Night
Mostly cloudy, with a low around 15.
Sunday
A chance of snow showers. Mostly cloudy, with a high near 25.
Click Map For Forecast
Point Forecast:
McHenry IL
 42.34°N 88.26°W
10:18 am CST Dec 18, 2017
10am CST Dec 18, 2017-6pm CST Dec 24, 2017
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database