Yes

you do need a jacket based on the weather in Bronx, NY, USA 1 second ago

Why? Because it's not very warm out.
57°F14°C & Clear

Wind is 8 mph13 km/h from the SE, gusting to 16 mph25 km/h
May 1
9pm56°F13°C8 mph13 km/h SEMostly Clear
10pm54°F12°C7 mph11 km/h SEMostly Clear
11pm54°F12°C6 mph10 km/h SEMostly Clear
May 2
12am53°F12°C5 mph8 km/h SEPartly Cloudy
1am52°F11°C5 mph8 km/h SEPartly Cloudy
2am52°F11°C5 mph8 km/h SEMostly Cloudy
3am51°F11°C5 mph7 km/h SEMostly Cloudy
4am51°F11°C5 mph8 km/h SCloudy
5am52°F11°C5 mph8 km/h SCloudy
6am52°F11°C5 mph8 km/h SCloudy
7am53°F12°C5 mph8 km/h SCloudy
8am55°F13°C6 mph9 km/h SCloudy
DateLowHighWindDayNight
May 150°F10°C76°F25°C4 mph6 km/h from SPartly CloudyPartly Cloudy
May 251°F11°C82°F28°C7 mph12 km/h from WPartly CloudyMostly Clear
May 351°F11°C65°F18°C8 mph13 km/h from EPartly CloudyPartly Cloudy
May 448°F9°C63°F17°C8 mph13 km/h from SEMostly CloudyCloudy
May 548°F9°C55°F13°C8 mph13 km/h from SERainDrizzle
May 654°F12°C73°F23°C4 mph6 km/h from WMostly CloudyPartly Cloudy
May 757°F14°C75°F24°C6 mph10 km/h from SWMostly CloudyPartly Cloudy

Yes

Low of 51°F11°C, High of 82°F28°C
Wind: 7 mph12 km/h
Precipitation: None

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