Chicago Weather

Timeline: How Much Snow You Could See and When in ‘Significant' Weekend Storm

Weather alerts have been issued for several counties ahead of the weekend system

NBCUniversal Media, LLC

Another winter wallop is in store for the Chicago area this weekend.

A potentially significant storm has set its sights on northern Illinois, likely bringing several inches of snow just days after much of the area saw between 5 and 8 inches of accumulation this week.

Weather alerts have been issued for several counties ahead of the weekend system.

But how much snow you see and when could depend on where you are.

Here is a breakdown of the forecast and what you can expect:

Friday Afternoon and Evening

Friday looks to be mostly to partly sunny and seasonably chilly with afternoon highs between 27 and 33 degrees with a clear night ahead.

Saturday Morning

Saturday morning, mostly cloudy skies turn overcast as the day grows windy and cold with highs in the low to mid 30s.

Saturday Afternoon

A winter storm watch that had been issued for the entire Chicago area was upgraded to a storm warning Friday afternoon.

In LaSalle County the warning begins at noon Saturday and continues through 6 p.m. Sunday, though the system could begin with a short period of freezing rain before transitioning to snow. In McHenry, Lake, DuPage, Cook, DeKalb, Kane, Kendall, Kankakee and Will counties in Illinois, and Lake County in Indiana, the warning begins at 3 p.m. Saturday and continues through 6 p.m. Sunday.

The alert warns of "heavy wet snow" and wind gusts of up to 30 or 35 mph. Accumulations of 5 to 9 inches or higher are possible.

A winter storm watch remains in effect for Newton and Jasper counties in northwest Indiana from Saturday afternoon through Sunday morning, warning of 3 to 7 inches of snow possible, with some locations seeing higher totals.

While there is still plenty of uncertainty surrounding the storm, early predictions indicate that snow will develop later in the afternoon. It may start as an icy mix initially then become steady heavy snow in the evening.

For far west and southwest locations, just outside of the Chicago metro area, precipitation looks to start between 2 and 4 p.m.

As the storm inches into the Chicago area, west and southwest counties are expected to see the system move in between 3 and 5 p.m.

Areas north and northwest of Chicago and the city itself, along with parts of northwest Indiana, will likely see things begin anytime between 4 and 7 p.m.

Saturday Evening

A period of moderate to heavy snow is expected across the area Saturday night. This is likely when the snow will be its most intense, before things begin to taper off in intensity overnight.

The winter storm watch warns of heavy, wet snow and strong winds that could cause low visibility and snow-packed roads, making travel conditions dangerous.

Sunday Morning

Initial projections show totals could be between 4 to 8 inches by dawn. An icy mix is possible far south toward the Kankakee River Valley which may limit totals.

Though things will lighten during the morning hours, how intense the snow will stay and for how long remains unclear as of Friday. There's likely to continue to be travel impacts during the morning hours.

Sunday Afternoon and Evening

There is again another chance for lake effect snow on Sunday following the storm, which could bring additional accumulations of 1 to 2 inches to areas along Lake Michigan.

The winter storm watch will continue through 6 p.m. Sunday for counties north of I-80 and by the lake, but only until 12 p.m. Sunday for those south of I-80 and in the western portion of the region.

Monday Morning

The lake effect snow could continue into Monday morning, initial forecasts indicate.

The work week will otherwise start off partly sunny, breezy and seasonably cold with the next chance for snow or a light wintry mix possible on Wednesday afternoon or evening.

Contact Us