It's a sunny Saturday on Long Island -- and skies will stay bright most of the day, according to the National Weather Service.

Meteorologists expect high temperatures in the 80s, with partly cloudy skies in the evening and a slight chance of showers and thunderstorms after midnight.

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The lows are forecast to be in the 60s. There's a 20 percent chance of rain Saturday and Sunday nights.

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The weather service predicts a mostly cloudy Sunday, with a slight chance of showers and thunderstorms Sunday and high temperatures in the lower 80s.