Here in Morgantown, West Virginia some of the official lows for January:
early in the month 6, 4, -4, -7, 6
and then consecutively toward the end 4, 1, 16, 8, 4, -9, -9, -2
http://www.erh.noaa.gov/
Fortunately we had a snow cover for the latter stretch of lows.
In late fall, most of the figs I had cut down to near the ground and then entirely covered or nearly covered with mulch. Snow cover added to that at the end of the month and currently. House and steep slope/bank offer additional protection to some. Others more exposed. Only time will tell.