That makes sense-- we see the same thing in the summer with higher temperature departures the farther north you go. So maybe patterns that would produce 100+ temps in the past for the coast only produce temps in the mid 90s with higher humidity now because it's getting harder to get a downslope wind? I would have expected last summer to have one or more 100+ degree days here because the summer was so dry-- and rule number 1 to get 100 degree heat here is to have very dry soil which heats up much faster. The sea breeze always comes in sooner or later, the key is having very dry soil to make the temperatures rise so quickly that it gets to 100 or higher before the sea breeze gets here (usually around 2 PM)