An ice dam is more likely to occur in fall, when temperatures begin to drop.

Question

Quizplus · Accepted Answer

Ice dams typically occur in winter when the roof over the attic gets warm enough to melt the underside layer of snow on the roof. The water trickles down between the layer of snow and the shingles until it reaches the eave of the roof, which stays cold because it extends beyond the side of the house. There, the water refreezes, creating an ice dam.

An Ice Dam Is More Likely to Occur in Fall