CHICAGO— The week of bi-polar weather is not over yet.
Temperatures will remain in the low 80s Friday and Saturday before dropping to the mid 60s on Sunday, the National Weather Service said.
Chicagoans should expect thunderstorms and rain through Saturday. The flash flood watch continues until 7 p.m. Saturday evening. Some stray showers should continue on Sunday.
As the weather moves east, conditions will dry out a little Monday, but storms may return as early as Tuesday, the National Weather Service said.