July 4 weekend outages

July 6 (Reuters) - More than 623,000 homes and businesses were without power as of late Sunday due to extreme weather conditions across several areas of the United States, according to data from PowerOutage.us.

Pennsylvania was the hardest hit, with about 119,300 outages, roughly 1.8% of the state's 6.7 million customers, according to the data.

The hardest-hit utility was a unit of PPL Electric Utilities in Pennsylvania, where around 79,945 homes and businesses were without service.

"Since the storm began, we have restored power to more than 130,000 customers, but significant work remains as crews continue repairing extensive damage and rebuilding portions of the electric system," PPL Electric Utilities said on its website.

Michigan had the second-highest number of outages, with about 110,060 customers without power. The hardest-hit utility in the region was a DTE Energy unit with roughly 82,183 outages.

"We estimate that 95% of impacted customers will be restored by the end of the day on Monday, July 6," DTE Energy said on its website.

New York-based energy company Con Edison said on Sunday it has restored power to more than 166,800 of the approximately 173,700 customers whose service was impacted by extreme weather.

Con Edison ED.N said the cities of Yonkers, Mount Vernon, Rye and New Rochelle in Westchester County, which is north of New York City, experienced the greatest number of storm-related outages, and 95% of its Westchester customers affected by the July 4 storms are expected to be restored by Monday at 7 p.m. EDT (2300 GMT).

Here are the eight biggest outages by state: