CHICAGO — Mostly cloudy Wednesday with a 60% chance of rain and storms. Winds: SW 5-10 G15. High: 85.

Mostly cloudy tonight with rain/storms expected. Winds: W 5-10. Low: 66.

WEDNESDAY: Morning sunshine followed by increasing cloudiness in the afternoon. Growing prospects for scattered showers and possible thunderstorms, with up to 50% of the area  likely to see rain by evening. Seasonably warm, moderate humidity. Winds: Southwest 5-15 mph.  High: 85.

WEDNESDAY NIGHT: Warm and moderately humid with scattered showers and thunderstorms, heaviest rainfall concentration is likely to fall across the southern suburbs. Low: 66.

THURSDAY:  Early clouds break, becoming partly sunny, seasonably warm in the afternoon with light lake breezes.  High: 84/78 lakeshore.

FRIDAY:  Sun/ building clouds. Warm, noticeably more humid. Scattered showers and thunderstorms develop. Some storms could be strong or borderline severe.  High: 87.

SATURDAY:  Becoming mostly sunny, seasonably warm and turning noticeably less humid later in the day. High: 86.

SUNDAY:  A good deal of sunshine, similarly warm afternoon temperatures near seasonable levels. Humidity levels continue low to moderate. Light PM lake breezes cool area beaches a few degrees.  High: 85/80 lakeshore.

Full forecast details and more at the WGN Weather Center blog