Yes

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

Why? Because it's cool. Pleasantly cool, but cool.
54°F12°C & Cloudy

Wind is 8 mph13 km/h from the SE, gusting to 19 mph30 km/h
May 5
7pm54°F12°C8 mph13 km/h SECloudy
8pm55°F13°C7 mph12 km/h SECloudy
9pm55°F13°C6 mph10 km/h SEDrizzle
10pm55°F13°C5 mph9 km/h SECloudy
11pm56°F13°C5 mph8 km/h SECloudy
May 6
12am56°F13°C4 mph7 km/h SCloudy
1am56°F14°C4 mph6 km/h SCloudy
2am56°F14°C3 mph6 km/h SCloudy
3am56°F14°C3 mph5 km/h SCloudy
4am56°F14°C2 mph4 km/h SCloudy
5am56°F14°C2 mph3 km/h SECloudy
6am57°F14°C2 mph4 km/h SECloudy
DateLowHighWindDayNight
May 548°F9°C56°F13°C8 mph12 km/h from SERainDrizzle
May 656°F13°C70°F21°C3 mph5 km/h from SCloudyCloudy
May 759°F15°C75°F24°C6 mph10 km/h from SEPartly CloudyRain
May 857°F14°C82°F28°C8 mph13 km/h from SWRainPartly Cloudy
May 955°F13°C65°F19°C10 mph16 km/h from ERainDrizzle
May 1052°F11°C58°F15°C7 mph11 km/h from ERainRain
May 1149°F9°C59°F15°C7 mph12 km/h from NRainPartly Cloudy

Yes

Low of 56°F14°C, High of 70°F21°C
Wind: 3 mph5 km/h
Precipitation: 44% rain

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