All the tropical activity / moisture over the GOM being transported northward definitely dirtied things up as far as temp potential and cloud cover, which isn't too surprising with the transitional ENSO period we're in.
That said, Summer's just beginning and all indications are (and have been) the worst of the heat will be backloaded.
I just checked my grids locally, and despite everyone hoping this might be a cool-ish Summer for North Texas with all the rain this Spring, we already have highs in the 100s starting tomorrow for days on end (with heat headlines likely forthcoming)...