I don't think a week of colder weather will affect the water temp much, especially up north where ice out was as recent as 10 days ago. Even if it does cool down, if you have sun on the north end of the bays, that will keep the water temp up. I would continue to fish the same areas and depths until they move in. Last week in the metro area, we were catching them in 5 to 7 feet of water. Not in the really shallow parts yet, but getting there. If I went out again this weekend, I would probably fish the same depth.
I would think that the pressure situation would be more of a factor. High pressures seem to produce more fish, at least in my experience.
Even eminent chartered accountants are known, in their capacity as fishermen, blissfully to ignore differences between seven and ten inches, half a pound and two pounds, three fish and a dozen fish. ~ William Sherwood Fox, Silken Lines and Silver Hooks, 1954