Yes

you do need a jacket based on the weather in Riverhead (North Fork), New York, United States 1 second ago

Why? Because it's cool. Pleasantly cool, but cool!
53°F12°C & Mostly Cloudy

Wind is 6 mph10 km/h from the South, gusting to 16 mph25 km/h
November 3
11pm53°F11°C7 mph12 km/h SouthwestMostly Cloudy
November 4
12am52°F11°C8 mph12 km/h SouthwestCloudy
1am52°F11°C8 mph14 km/h SouthwestPartly Cloudy
2am52°F11°C14 mph23 km/h WestDrizzle
3am51°F11°C17 mph27 km/h WestWindy
4am49°F10°C17 mph27 km/h NorthwestWindy
5am48°F9°C19 mph30 km/h NorthwestWindy
6am48°F9°C20 mph32 km/h NorthwestWindy
7am47°F8°C20 mph33 km/h NorthwestWindy
8am47°F8°C20 mph32 km/h NorthwestWindy
9am46°F8°C20 mph32 km/h NorthwestWindy
10am46°F8°C19 mph30 km/h NorthwestWindy
DateLowHighWindDayNight
November 342°F6°C57°F14°C5 mph8 km/h from SouthCloudyDrizzle
November 444°F7°C56°F14°C17 mph28 km/h from NorthwestWindyMostly Clear
November 542°F5°C60°F15°C15 mph23 km/h from SouthwestMostly CloudyDrizzle
November 639°F4°C53°F12°C17 mph27 km/h from NorthwestWindyPartly Cloudy
November 735°F2°C57°F14°C13 mph21 km/h from SouthMostly CloudyRain
November 846°F8°C62°F17°C12 mph19 km/h from WestDrizzlePartly Cloudy
November 943°F6°C55°F13°C9 mph14 km/h from SouthMostly CloudyDrizzle

Yes

Low of 45°F7°C, High of 56°F14°C
Wind: 17 mph28 km/h
Precipitation: None

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