Large scale power outages struck Ashford, Union, Tolland, Stafford and Willington Sunday afternoon and night.
Connecticut Light & Power Co. crews worked through the evening to make repairs and restore power.
Most customers had power restored by early Monday.
The National Weather Service issued a wind advisory for Connecticut until 1 a.m. Monday.
Winds blew from the northwest at 15 to 25 mph and gusted to 45 mph, the weather service said.
At one point 87percent of CL&P customers in Union, 71 percent in Willington and 75 percent in Stafford were out of power, although large sections of those towns appeared to be restored Sunday afternoon. Some customers got power back, then lost it again.
The wind took down trees across greater Hartford as well.