Long Island gets another helping of dry summer daytime conditions on Friday, with a forecast of mostly sunny skies and daily highs near 80 degrees.

The National Weather Service's Upton office said the day will be a near repeat of Thursday, when a cold front knocked out humid air that had lingered across Nassau and Suffolk counties at the start of the week.

News 12 Long Island meteorologist Matt Hammer said Friday will be just slightly more humid than Thursday. There will be plenty of sunshine, too, with a high UV (ultraviolet radiation) index.

See also7-day weather forecast for LI

Those venturing outdoors for any extended period should be sure to bring along some sunscreen, Hammer said.

Light winds from the south and southwest will blow at 7 to 13 mph, the service said.

Overnight, skies will get "just some thin fair-weather clouds" and lows will be in the 60s, he said.

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There is a slight chance for a shower Friday night into Saturday, as the clouds stick around.

Saturday calls for a 20 to 40 percent chance of rain during the day, and the muggy conditions return. Daily highs in the low 80s are likely.

There's a chance to hit 90 on Sunday, as the heat builds. It's a mix of sun and clouds, with the possibility of a late afternoon shower.

For the much of next week, temperatures stay in the upper 80s, Hammer said.