More rain is expected to dampen some summertime activities for much of the upcoming week, but Saturday still could be a good day to head to the beach if you don't mind ducking a possible pop-up shower or two.

There are also strong rip currents on Long Island's ocean beaches Saturday, the National Weather Service said in a statement issued just after 12:30 p.m. The statement is in effect until 9 p.m. Saturday. Swimmers who find themselves in a rip current should yell for help and swim parallel to shore to break free from the current, the service said.

On Saturday highs will be in the upper 80s with only a 20 percent chance of rain, according to Brian Ciemnecki, a meteorologist with the National Weather Service in Upton. "There'll be a slight chance -- about 20 percent -- very low. That's pretty typical in summer when it's hot there can be some afternoon convection," he said.

"At night we'll be looking at lows across most of the Island in the mid 60s," Ciemnecki said. "The pine barrens cool off more, so there temperatures could fall into the upper 50s."

"It's a typical summer week with a pop of afternoon showers and thunderstorms," said News 12 Long Island meteorologist Pat Cavlin. But he said there have been more threats of rain recently than actual rain, which he said is needed. "In fact we're running a deficit."

Sunday will be a sunny but a little cooler, with highs reaching only the mid 80s and lows in the upper 60s.

On Monday for the start of the workweek, "We're looking at highs in the mid 80s and a chance of a shower or thunderstorms -- there'll be a 20 percent chance at night," Ciemnecki said. Lows will be in the lower 70s.

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Tuesday and Wednesday are forecast to be the only completely dry days of the week, Ciemnecki said.

"We should get a mostly sunny day Tuesday," Ciemnecki said. Highs will reach the mid to upper 80s, and at night temperatures will drop into the upper 60s.

"Wednesday will be another sunny day," Ciemnecki said. At night a 20 percent chance of showers returns and lows will be in the mid 60s.

Highs on Thursday should be in the lower 80s and it will be partly sunny.

"There'll be a 30 percent chance of showers and thunderstorms all day," Ciemnecki said. "Lows at night will be in the mid 60s with a 25 to 30 percent chance of rain that falls off during the night."