Cool spell short lived; heat by July 4

It’s not often that Chicago’s afternoon temperatures fail to rise above the lower 70s during the closing days of June. Cool-weather lovers are relishing today’s chilly interlude that is delivering afternoon readings more typical of early October than late June. In fact, readings as cool as yesterday’s 74º and this afternoon’s 73º occur only about one day in 12 at the end of June. Summer, however, is not to be put off. A multi-day warming trend—beginning tomorrow—will carry the city’s temperatures back into the lower 90s by this coming Tuesday. Humidity will also reach uncomfortable levels. The National Weather Service advises that northerly winds blowing down the full length of Lake Michigan have generated conditions favorable for rip currents on the Indiana shores of the lake.
--By Richard Koeneman, WGN Weather Center Meteorologist