Chicago woke up to mostly clear skies and cool lake air Saturday morning, with temperatures near 63°F at Midway and a day that looks just about perfect for getting outside. Expect sunshine, a pleasant breeze, and highs in the upper 70s, with gusty winds building into the afternoon. That calm will not last long, though, as a soaking and potentially heavy rain is likely on Sunday, June 21, with low-lying spots at risk for localized flooding.
Weekend Outlook
Saturday should top out near 78°F with northwest winds of 10–15 mph and gusts up to 25 mph. Saturday night will be partly cloudy with a low around 62°F. Rain showers are expected to move in Sunday, June 21, after about 10 a.m., with a high near 69°F and an 80% chance of precipitation. Forecasters say a corridor of 2–4 inches of rain could set up somewhere in or just south of the metro and have issued a Hydrologic Outlook because many creeks and streams are elevated, according to the National Weather Service Chicago.
Afternoon Winds Pick Up
Winds will strengthen this afternoon out of the west-northwest and could make things feel pretty blustery, especially away from the lake. Gusts up to 25 mph are possible, so it is a good idea to secure lightweight items and expect choppy conditions on local waterways. Lakefront neighborhoods will stay a few degrees cooler than inland spots as the onshore breeze settles in through the evening.
Flooding And Commute Impacts
Because soils and small streams are still running high from earlier rains, brief heavy downpours on Sunday could trigger urban flooding and ponding on local streets. That sets the stage for slow travel or localized road closures in low-lying neighborhoods and near creeks. Avoid driving through standing water and build in extra time if you have to be out. Keep an eye on watches and warnings from the National Weather Service Chicago for any changes to timing or flood statements.
Plan Ahead
If you are planning events this weekend, lean into Saturday or make sure you have an indoor backup for Sunday. Check local alerts and weather.gov/chicago before heading out, and do not attempt to cross flooded streets — turn around, do not drown.
