CHICAGO (CBS) — Unseasonably cold weather will stick around Chicago for the next week, with a chance of snow accumulation this weekend.

Temperatures over the next seven days will remain well below freezing on most days.

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This weekend, highs will only reach the mid 20s.

Overnight, wind chills could be below zero.

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Snow will move into the area on Sunday night, with 2-3 inches possible north of Interstate 88.

There is also a chance of lake effect snow in Lake and Cook counties on Saturday night.

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The average high temperature for this time of year is the upper 30s.