Fincastle 84
Just returned from 4 weeks staying 50 miles or so North of Tampa, and you're right - much colder than normal and when the sun did shine the wind was cold. Hope the weather improves for your trip.
One piece of advice, although I would imagine you don't need it: although the BA flight was the only international flight arriving, there were only 3 immigration desks open and some pax must have spent at least 30/45 minutes waiting to be processed. Therefore the nearer the front of the plane you can sit [and therefore the quicker you can get to the immigration queue] the less time you will need to wait.
Have a good trip.