Ken, 48F is getting cold for them. Will not stand too many days with that temperature and especially if wet. I have mine in when temperatures at night get any lower than 50F - 55F.
Rick
"Many times a day I realize how much my own outer and inner life is built upon the labors of my fellow men, both living and dead, and how earnestly I must exert myself in order to give in return as much as I received"