Heavy Snow in the Cascades and Northern Rockies; Wintry Mix in the Northeast; High Winds in Southern California

Two more cold fronts will pass through the Northwest U.S. this week with heavy mountain snow continuing across the Cascades, and northern Rockies. A quick moving storm system will bring mixed precipitation including some freezing rain across the Northeast U.S. today. High winds could blow down trees and power lines in the mountains of southern California this evening through Thursday. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fog/Mist

34°F

1°C

Humidity	97%
Wind Speed	SW 9 mph
Barometer	29.90 in (1013.5 mb)
Dewpoint	33°F (1°C)
Visibility	3.00 mi
Wind Chill	27°F (-3°C)
Last update	7 Jan 11:51 am CST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

McHenry IL

This Afternoon
High: 41 °F
Patchy Fog
Tonight
Low: 36 °F
Increasing
Clouds
Thursday
High: 51 °F
Mostly Cloudy
then Rain
Thursday Night
Low: 40 °F
Rain and
Breezy then
Chance Rain
Friday
High: 45 °F
Chance Rain
Friday Night
Low: 33 °F
Mostly Cloudy
then Chance
Rain/Snow
Saturday
High: 38 °F
Rain/Snow
Likely
Saturday Night
Low: 20 °F
Chance Snow
Sunday
High: 28 °F
Partly Sunny

Detailed Forecast

This Afternoon

Patchy fog before 2pm. Otherwise, partly sunny, with a high near 41. South wind around 10 mph.

Tonight

Increasing clouds, with a low around 36. South southwest wind around 10 mph.

Thursday

Rain after noon. High near 51. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

Rain, mainly before midnight. Low around 40. Breezy, with a south southeast wind 10 to 20 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%.

Friday

A 30 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 45. West northwest wind 5 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 15 mph.

Friday Night

A chance of rain after midnight, mixing with snow after 3am. Mostly cloudy, with a low around 33. Chance of precipitation is 40%.

Saturday

Snow likely, possibly mixed with rain. Mostly cloudy, with a high near 38. Chance of precipitation is 70%.

Saturday Night

A chance of snow. Mostly cloudy, with a low around 20.

Sunday

Partly sunny, with a high near 28.

Sunday Night

Partly cloudy, with a low around 19.

Monday

Mostly sunny, with a high near 36.