Clouds, areas of fog and occasional showers, drizzle, and even an isolated thunderstorm are on tap for Long Island at least into Saturday, the National Weather Service said.

Friday's highs are expected in the upper 50s to 60, said David Stark, weather service meteorologist in Upton. Then a warm front is forecast to "move through on Saturday scouring out the low clouds and warming us up," the weather service said on its Facebook page.

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And, good news for Sunday -- "it appears as if Mother's Day will be nicest day" of the forecast period "with mostly sunny skies and temps in the mid to upper 70s," the service said.

The service's office forecast a 40 to 60 percent chance of rain from Friday into Saturday night for most of Nassau and Suffolk counties.

Joey Picca, a meteorologist in Upton, said an unsettled pattern of rain should last through late Saturday.

"We'll have periods of rainfall, not a constant rain," Picca said. "Most of the time, it should be a light rain, but there also is the chance for a scattered thunderstorm."

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Picca also said there will be some stretches of dry weather, so those with outdoor plans for the weekend could catch a break.