We had a similar temp in Southeast Mass. 8F in the run. I wrapped three sides in plastic last week. The stock tank deicer kept the horizontal nipples and bucket functioning. The water is shielded from the wind. Tonight is supposed to be a bit colder.10°F here in SEMO last night. Both vertical and horizontal nipples froze. Lid was frozen to the bucket but the water was above freezing @ 50°F. I think a cobbled up wind break is in order today. For now a heated dog bowl will be the water source.
JT