Yes

you do need a jacket based on the weather in New York, NY 10016, USA 6 minutes ago

Why? Because it's cold. simple as that.
33°F1°C & Mostly Clear

Wind is 9 mph14 km/h from the NW, gusting to 20 mph32 km/h
March 19
7am33°F1°C9 mph15 km/h NWMostly Clear
8am34°F1°C11 mph18 km/h NWMostly Clear
9am35°F2°C13 mph20 km/h NWMostly Clear
10am37°F3°C13 mph21 km/h NWPartly Cloudy
11am39°F4°C13 mph20 km/h NWMostly Clear
12pm42°F5°C13 mph21 km/h WPartly Cloudy
1pm44°F7°C13 mph22 km/h WPartly Cloudy
2pm45°F7°C14 mph22 km/h WMostly Cloudy
3pm46°F8°C14 mph23 km/h WMostly Cloudy
4pm46°F8°C14 mph23 km/h WMostly Cloudy
5pm46°F8°C14 mph22 km/h WMostly Cloudy
6pm46°F8°C13 mph22 km/h WCloudy
DateLowHighWindDayNight
March 1933°F1°C46°F8°C13 mph21 km/h from WPartly CloudyMostly Cloudy
March 2035°F2°C54°F12°C14 mph23 km/h from WPartly CloudyWindy
March 2130°F-1°C43°F6°C15 mph25 km/h from NWWindyClear
March 2227°F-3°C43°F6°C6 mph10 km/h from SWPartly CloudyRain
March 2341°F5°C55°F13°C11 mph17 km/h from SERainDrizzle
March 2437°F3°C50°F10°C13 mph21 km/h from NPartly CloudyPartly Cloudy
March 2535°F2°C48°F9°C14 mph22 km/h from NEDrizzleMostly Cloudy

Yes

Low of 36°F2°C, High of 54°F12°C
Wind: 14 mph23 km/h
Precipitation: 16% rain

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