Lake-Effect Snow Targets Northwest Indiana as Chicago Area Grips Cool Conditions

Accumulating snow expected in Porter and LaPorte counties over the next two days.

Published on Feb. 21, 2026

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While last weekend saw unseasonably warm temperatures in the mid-to-upper 50s, the Chicago area is now experiencing more typical mid-February weather, with highs only reaching the low-to-mid 30s on Saturday. A disturbance moving in from the north will bring a light dusting of snow to the Chicago area overnight, but the brunt of the snowfall will occur in northwest Indiana, where up to 5 inches of accumulation is possible through Monday.

Why it matters

The lake-effect snow in northwest Indiana could lead to hazardous travel conditions, with snow-covered roads and reduced visibility. Travelers, especially along Interstate 80 and the Chicago Skyway, should be prepared for rapidly changing conditions.

The details

Winds of 10 to 20 miles per hour will make it feel much colder, with wind chill values around zero or potentially falling below zero in some spots. The snow is expected to taper off in the afternoon on Monday, but another chance of snow is likely next week.

  • On Saturday, highs will only reach the low-to-mid 30s, with a light dusting of snow possible overnight.
  • From Sunday night to Monday morning, the greatest impacts from the lake-effect snow will be felt in Porter and LaPorte counties in northwest Indiana, with up to 5 inches of accumulation possible.
  • On Monday, the lake-effect snow will continue in northwest Indiana before tapering off in the afternoon.

The players

Pete Sack

NBC 5 Storm Team Meteorologist who explained the weather conditions and forecasts.

National Weather Service

The agency that issued the weather alerts and forecasts for the region.

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What they’re saying

“we're kind of fluctuating back between winter and spring.”

— Pete Sack, NBC 5 Storm Team Meteorologist (NBC Chicago)

What’s next

Travelers should take extra time on Sunday night, especially along portions of Interstate 80 and the Chicago Skyway, where snow is likely. Drivers should prepare for localized poor visibility, snow-covered roads and potentially hazardous travel.

The takeaway

This winter weather event highlights the unpredictable nature of the Chicago area's climate, with the region experiencing a rapid shift from unseasonably warm conditions to a return of more typical mid-February weather. Residents and travelers should stay vigilant and prepared for changing weather patterns and potential hazardous driving conditions.