That's the one thing. Phoenix is generally cooler than Florida overall during the winter, partly due to less humidity. That's why our average lows DJF are in the low to mid 40s. With that said, we dont get the extreme cold northern Florida can get during an eastern US arctic outbreak. Frost and below freezing temps are are rare in the Phoenix metro area. The orange groves around Phx never took the hits that central Florida did over the years.