Yes

you do need a jacket based on the weather in Brooklyn, NY 11218, USA 1 second ago

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

Wind is 6 mph10 km/h from the SE, gusting to 11 mph17 km/h
April 25
2pm54°F12°C7 mph11 km/h SEPartly Cloudy
3pm55°F13°C8 mph12 km/h SEMostly Clear
4pm54°F12°C9 mph15 km/h SMostly Clear
5pm53°F12°C10 mph15 km/h SMostly Clear
6pm52°F11°C9 mph15 km/h SMostly Clear
7pm50°F10°C9 mph15 km/h SMostly Clear
8pm48°F9°C8 mph13 km/h SMostly Clear
9pm47°F8°C7 mph12 km/h SPartly Cloudy
10pm46°F8°C6 mph10 km/h SMostly Clear
11pm45°F7°C5 mph9 km/h SClear
April 26
12am45°F7°C4 mph7 km/h SEClear
1am45°F7°C3 mph5 km/h SEClear
DateLowHighWindDayNight
April 2542°F6°C55°F13°C7 mph11 km/h from SEPartly CloudyClear
April 2641°F5°C58°F15°C7 mph12 km/h from SEClearClear
April 2744°F6°C58°F15°C10 mph16 km/h from SMostly CloudyCloudy
April 2849°F10°C73°F23°C7 mph12 km/h from SDrizzlePartly Cloudy
April 2957°F14°C80°F27°C6 mph10 km/h from SEPartly CloudyPartly Cloudy
April 3055°F13°C66°F19°C10 mph16 km/h from SEPartly CloudyPartly Cloudy
May 155°F13°C76°F24°C7 mph12 km/h from SWMostly ClearMostly Cloudy

Yes

Low of 41°F5°C, High of 58°F15°C
Wind: 7 mph12 km/h
Precipitation: None

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