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Crystal Lake Today
By the People, for the People
Winter Weather Advisory Issued for McHenry County
Snow and strong winds could create hazardous travel conditions on Monday morning
Mar. 15, 2026 at 6:35pm
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A winter weather advisory has been issued for McHenry County, Illinois and surrounding areas, with 1 to 3 inches of snow and wind gusts up to 45 mph expected overnight Sunday into Monday. The combination of snow and blowing winds could reduce visibility and make travel hazardous, particularly during the Monday morning commute. Officials are urging drivers to slow down and use caution, and residents to be careful while walking outdoors as sidewalks, stairs and driveways may become icy and slippery.
Why it matters
Winter weather advisories are common in the Midwest, but they still pose risks to public safety and can disrupt daily routines. This advisory is particularly noteworthy as it covers a large swath of northeastern Illinois, including the heavily populated McHenry County area, which could see significant snowfall and dangerous driving conditions.
The details
According to the National Weather Service, the winter weather advisory is in effect from 10 p.m. Sunday until 1 p.m. Monday. Forecasters say 1 to 3 inches of snow is likely across the region, with portions of McHenry and northwest Kane and Lake counties potentially seeing more than 3 inches. The strong winds up to 45 mph could reduce visibility and make travel hazardous, especially on bridges, overpasses and other elevated roadways that may become slick with ice.
- The winter weather advisory is in effect from 10 p.m. Sunday until 1 p.m. Monday.
The players
National Weather Service
The federal agency that issues weather forecasts and warnings, including this winter weather advisory for McHenry County and surrounding areas.
Illinois Department of Transportation
The state agency that provides up-to-date information on road conditions through its GettingAroundIllinois.com website, which officials are urging drivers to check.
What’s next
Officials will continue to monitor the weather conditions and provide updates on road safety and travel advisories throughout the day on Monday.
The takeaway
This winter weather advisory serves as a reminder for residents in McHenry County and surrounding areas to be prepared for potentially hazardous driving and walking conditions, and to take necessary precautions to ensure their safety during the Monday morning commute.

