As of Tuesday April 14th, Chicago has seen 6 consecutive days above 60 degrees.
The last time Chicago saw this many days above 60 was September 24th through the 29th of 2014.
High pressure will anchor itself across the eastern Great Lakes resulting in easterly winds. This will keep temperatures along the lake in the 50s while areas away from the lake will continue to see temps in the mid to upper 60s.
This pattern will lead to mainly dry conditions through Thursday with a chance of showers late Friday into Saturday. See surface map.
By next week the pattern changes significantly with an area of low pressure dropping out of Canada and becoming nearly stationary across the northern Great Lakes. This will bring unseasonably cool air to the region for most of next week and into the following weekend. So get out and enjoy the next few days.
Look to the map for the 8 to 14 day outlook for temperatures and precipitation.