By Mary Kay Kleist

CHICAGO (CBS) — A cold front moves into our area as the sun goes down this evening.

Isolated showers or a stray rumble of thunder are possible Friday night.

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(Credit: CBS)

This system is weakening as it meets the dry air mass we have in place. Winds will shift behind the front and become northwesterly later this evening.

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Any morning clouds Saturday will clear throughout the day, with a high around 77. Cool breeze off the lake may build waves near the shoreline.

(Credit: CBS)

Warmer on Sunday, with a high near 87.

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(Credit: CBS)

Mary Kay Kleist