Don't know if this would make any difference, but do you have something, even some old blue tarps, that could be cut to a size sort of like a "skirting" and taped to the trailer. Certainly won't be attractive, but if you can block any wind it might help.
Even here in West TN, our beautiful 70+ degrees a couple of days ago is long gone. Back to cold, grey, cold, drizzly, cold, miserable. We were supposed to be in FL for baseball this week and had to cancel, but watched the game on MLB....lovely mid 80's, sunny, gorgeous and one in the win column....just not fair!