When I lived in North Carolina, we were without power for several days due to Hurricane Fran just after Labor Day. The temps were in the 90s and the humidity wasn't far behind. A few years later, we were without power for 5 days due to an ice storm just before Christmas. Temps were around freezing. If I were to choose which scenario was worse, I'd say the power outage with high temps and humidity by far. When it was cold, we at least were able to heat with the fireplace and cook on the stove's cooktop with gas.
Steve