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Forecast: A chilly, mostly sunny week ahead for Long Island

A monarch butterfly lands in a wooded area

A monarch butterfly lands in a wooded area in Westhampton Beach on Sunday. Credit: James Carbone

Expect sweater weather this week on Long Island as forecasters predict brisk conditions with rain on Monday, followed by mostly sunny skies through Friday.

“Very fall-like weather patterns” are expected, said David Stark, a National Weather Service meteorologist in Upton.

On Monday, there’s a chance of light showers, but no more precipitation is expected through Friday, Stark said.

A warm front will move across the Island Monday, with highs in the upper 60s, a few degrees above average for this time of year, said John Murray, a National Weather Service meteorologist in Upton. Then a cold front will approach late Monday bringing cooler temperatures, accompanied by a high pressure system bringing dry weather, he said. 

Temperatures Monday night will likely be in the lower 50s, Murray said. 

Tuesday temperatures are expected to be in the upper 50s, a few degrees below normal for this time of year, with night-time temperatures dropping in  the upper 40s to low 50s, he said. 

Dry weather will continue the rest of the week, with increasing clouds Wednesday and temperatures in the upper 50s.

It's also expected to be breezy with gusts up to 30 miles per hour Monday in some places on the Island, according to Murray. Wind will continue through midweek with gusts potentially reaching up to 35 miles per hour Wednesday, he said. 

Another cold front will move across Wednesday night, bringing "remarkably cooler" temperatures by Thursday with highs in the lower 50s, according to Murray.

Mostly sunny skies are in the forecast for Thursday and Friday, as well, with Friday's high expected to be 61 with a low of 51. 

The possibility of rain returns Saturday with a 30 percent chance of showers with partly sunny skies, and a high of 64.

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