Black Bass (Lake Ontario and tributaries in JeffersonCounty & St. Lawrence River and tributaries) 3rd Saturday in June through Nov 30 12" 5If you read the rules, NO CATCH AND RELEASE FOR BASS IN JEFFERSON COUNTY.
Lake of the isles/eel bay has been good from what I've heard and always a safe bet, go through this whole thread and theres useful info. I believe your correct the long winter has made the water colder later this year which has affected the bite. IF you got a boat and a depth finder just fish the drop offs. If your not diehards and looking to catch fish lake of the isles is a great swim spot and if you got kids panfish galore.