Enjoy the sunshine while you can. Isolated afternoon showers and thunderstorms are expected to spread across the Chicago area late Monday night, bringing plenty of rain.
Weather models show overnight storms in 30 to 50 percent of the area could produce heavy rain, particularly after midnight.
Pea- to dime-size hail, wind gusts of up to 50 mph and frequent cloud-to-ground lightning from the strongest storms are more like north and west of Chicago.
Nighttime conditions remain otherwise hazy and humid with low temperatures in the upper 60s.
Rain stays in the forecast for most of the week, continuing Tuesday morning with scattered showers and clouds, as well as possible storms late in the day. Models show a chance of showers and storms every day this week, with the best chances on Thursday, and then on-and-off through Sunday.
Temperatures remain seasonable in the mid-80s for much of the week.