By Mary Kay Kleist

CHICAGO (CBS) — High pressure and southerly winds help to warm us up this weekend.

Chicagoans can expect lots of sun on Saturday.

Clouds increase Sunday ahead of the next system, but some areas may touch 50 degrees.

Rain arrives after dark Sunday night.  Monday will be wet with arctic air headed our way.

As cold air rushes in Monday night, rain changes to snow.

Then the coldest air of the season arrives on Tuesday!

Mary Kay Kleist