Chicago woke up to a cool, gray start on Sunday, June 21, with low clouds parked over the lakefront and temperatures stuck in the low to mid 60s. That quiet vibe will not last. Rain is expected to move in by late morning and spread across the city through the afternoon, with showers likely between 11 a.m. and 4 p.m. Thunderstorms are forecast into tonight and could pack heavy downpours and strong gusts.
Afternoon Rain And Flood Risk
Showers are likely from late morning into midafternoon, with temperatures making a brief run to around 68°F before slipping back into the low 60s later in the day. East-southeast winds will run 0 to 15 mph with gusts up to 25 mph this afternoon, then ramp up tonight to 15 to 20 mph with gusts that could reach 30 mph. New rainfall totals of about one half to three quarters of an inch are expected today, and some spots could pick up 1 to 2 inches tonight where heavier bands repeatedly pass over the same neighborhoods, according to NWS Chicago.
Beach Hazards And Boating
If you were eyeing a quick dip in Lake Michigan, you may want a different Sunday plan. High waves and dangerous rip currents are expected to create life-threatening swimming conditions from this evening through Monday night, with southern beaches taking the hardest hit. Small craft advisories are in effect for nearshore waters, and lifeguards or park staff may close beaches or post swim advisories. Check conditions before you go, per the Chicago Park District.
How To Prepare
Have a solid indoor backup for any outdoor plans and build in extra time for driving, since heavy downpours could slow traffic and pond water on roads. Skip driving through flooded underpasses, no matter how tempting it looks to save a minute. If you are headed to the lakefront, stay off piers and breakwalls and follow lifeguard instructions. Keep an eye on updated forecasts along with any watches or advisories from the National Weather Service as the day unfolds.
