Meteorologists believe this week will be a wet one, though rainfall accumulation isn’t expected to rise to flooding levels, according to the National Weather Service.

Monday will bring a light rain early in the day with a steadier rainfall in late morning and early afternoon, said Jay Engle, a National Weather Service meteorologist in Upton.

“There could be a rumble of thunder,” Engle said.

Fog is expected along the East End and the South Shore, he said, with temperatures near 60 degrees — about 10 degrees below normal.

“The rain will be moving from the south and by the time it gets to Long Island, it will most likely be toward daybreak — with it starting in Nassau and spreading into Suffolk,” meteorologist Tim Morrin said. “It’ll impact the commute, with rain heavier at times, but it’s hard to forecast exactly when.”

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The rain should taper off Monday night around midnight, with temperatures in the upper 50s, he said.

Tuesday will bring brief morning sunshine during a mostly cloudy day with high temperatures near 70 before rain takes over again at night.

There is an 80 percent chance of precipitation on Wednesday, a 50 percent chance of scattered thunderstorms on Thursday and a 60 percent chance of rain on Friday, Morrin said.