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Long Island weather: A pleasant, sunny stretch replaces days of oppressive heat

Samantha Cohen, 4, of Glen Oaks, draws a

Samantha Cohen, 4, of Glen Oaks, draws a line in the sand at North Hempstead Beach Park on Wednesday. Sun, cooler temperatures and lower humidity will make Thursday a great day at the beach. Credit: Danielle Silverman

After a stretch of days with "oppressive" as the weather watchword for Long Island, Thursday's forecast dials back the heat and humidity and ushers in conditions more commonly known as "pleasant."

The first sign of positive changes will be evident by daybreak when dew points should slide down into the 50s, according to the National Weather Service.

Below 55, dew points signal dry weather. The 55 to 65 range is muggy, the National Oceanic and Atmosphere Administration says, and 65 and higher is considered "oppressive."

Thursday will be sunny with some possible haze with a high of 82 degrees. The haze is lingering from still-blazing Western wildfires that blocked the sun and jeopardized the air quality in the metropolitan area for a second day in a row.

"We're going to see some of these plumes of smoke migrate through the air over the next few days," said Dominic Rammuni, a weather service meteorologist.

At least the humidity should be less troublesome.

"Weak high pressure will settle in on Thursday, providing comfortably warm and dry conditions," the weather service said.

Blue skies arise from high pressure systems as their falling air dries and cools. Low pressure systems, their opposite, often produce rain because their rising air warms, allowing vapors to condense into clouds.

Friday and Saturday also should be quite pleasant and sunny, with daytime highs in the low 80s, and that drier air.

Still, a cold front may bring some downpours Friday afternoon. The odds of rain are 20% after 2 p.m. or so, the weather service said.

The odds of showers double to 40% on Saturday night, and while Sunday may start off under sunny skies, rain and storms could arrive after 2 p.m., with the chances of rain estimated by the weather service at 50%.

A high near 81 is expected Sunday.

A southern wind will raise the humidity while also delivering any storms, forecasters said. And a cold front, arriving from the north, also could bring downpours before it gives way to another high pressure system.

Monday and Tuesday should be sunny with thermometers rising no higher than the low 80s during the day.

With Joan Gralla

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