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Forecast: High heat and humidity mark first part of the week

Our respite from the oppressive heat is coming to an end.

After a string of virtually perfect summer days, the first half of the workweek will be hot and humid, meteorologists said.

Temperatures will climb after the mercury dips to the upper 60s overnight Sunday, said Faye Morrone, a meteorologist with the National Weather Service in Upton.

Monday will have high temperatures in the upper 80s, and Tuesday and Wednesday will be around 90, Morrone said. It will feel even hotter with humidity, and the heat index could reach the upper 90s on those days.

That's above the average high of 79 degrees for this time of year in Islip.

“Overnight lows really aren’t going to provide a whole lot of relief,” Morrone said, adding low temperatures will be in the low to mid 70s through Wednesday night.

The weather will feel “a little cooler” on the East End, Morrone said.

Temperatures will come down on Thursday and Friday as a chance of showers and thunderstorms is possible.

Highs on Thursday will be in the lower to mid-80s and will dip down to the mid- to upper 70s on Friday. The overnight low Friday night is expected to be in the mid-60s.

Saturday is expected to top out at 77 degrees with the sun  peeking through partly cloudy skies.

With David M. Schwartz

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