BANGOR, Maine — A thin layer of ice that coated the roads early Wednesday caused schools all around the region to close for the day or open late because of treacherous driving conditions.

“There was actually a fair amount of freezing rain,” meteorologist Maureen Hastings of the National Weather Service in Caribou said of the storm that hit Maine early Wednesday. “Bangor reported 0.15 inches of ice. That glaze of ice can make traveling dangerous.”

Schools in Bangor, Brewer, Glenburn and Orrington opened one hour later than normal. Schools in Augusta, Hallowell, Orono and Princeton had two-hour delays, and some of the schools that closed included Skowhegan, Lincoln, Houlton and Searsport.

Bangor police Sgt. Tim Cotton said drivers in Bangor were careful.

“According to our dispatchers, it has been a slow morning regarding collisions,” Cotton said. “I would say a slow day with no serious accidents at all.”

Holden Police Chief Chris Greeley said his officers dealt with a weather-related crash Tuesday night on Route 1A, “but today has been quiet … so far.” He said the accident report wasn’t final, so he had no additional information to provide.

In Orono, there was one storm-related vehicle accident, Police Chief Josh Ewing said.

“Vehicle slid off the road on Stillwater Avenue, no damage, no injuries,” Ewing said.

The snow that fell on Wednesday did not amount to much, Hastings said.

“Aroostook County saw 1½ to 4 inches,” as of 8 a.m., she said, adding it was still snowing in northern Maine. Penobscot County reported an inch of snow, and Greenville in Piscataquis County reported 4 inches of snow.

More snow is expected to fall Wednesday night, the meteorologist said.

“It does look like we’ll have another round of snow tonight,” Hastings said. “We’re looking at another inch or two.”

Weather forecasters also are keeping an eye on a storm developing in the Atlantic that is moving in this direction and may arrive in the area in the next couple of days.

“It may brush the Maine coast with a bit of snow,” Hastings said.

People also should be cautious of any wet roads freezing once the sun sets, meteorologist Francis Kredensor of the National Weather Service in Caribou said Wednesday afternoon.

“Anytime you have melting snow and freezing weather, there is a chance for black ice,” Kredensor said.