Chicago First Alert Weather: Chilly temps, rain, and snow?

CHICAGO (CBS) -- Get ready for that Chicago weather as a chilly pattern is on the way with rain arriving tonight.

Sunshine returns Monday, but Halloween brings chilly temperatures and a chance for a few snow showers. Sunshine returns for the rest of the week.  

Today:

Increasing clouds. High 50.

Tonight:

Showers. Low 40.

Tomorrow:

Rain showers, especially in the morning. High 45.

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• Chicago