We are from So. Calif and faced much the same situation. My older son now a Jr at a Midwest D3 was one of those warm weather kids who only wore long pants and closed toe shoes on Easter Sunday and weddings. Shorts and flip flops for every occasion. When push came to shove and reality hit, he turned down Southern California schools where he had limited opportunities to play and went to where he had the best chance to accomplish his academic & athletics goals. Get a STEM degree from an academic school and have the best chance to get play time. He has played in 32 degrees in April. snow in mid May. etc. Late fall they practice in an indoor facility that rivals many larger schools, and in regards to class. "Just put your coat on and get to class as fast as you can" When the dream is big and the desire to play still strong a kid will go wherever he can.
BTW This past summer he couldn't wait to get back to school to rejoin his teammates and friends.