CHICAGO – Chicago will see a sudden change to summer-like temperatures this week.

Sunday begins a gradual warming trend with sunny skies and highs in the mid to mid 60s. By Tuesday, temperatures will reach the mid-80s.

However, the pleasant weather will be short-lived as a cold front is expected to bring widespread rain Wednesday evening.

Residents in the Chicago area are urged to be cautious with open flames due to dry conditions and windy weather. The National Weather Service has issued a fire warning for Monday and Tuesday.

While the rain is expected to clear by Thursday, trick-or-treaters may want to dress in layers as temperatures are expected to drop significantly by the end of the week.