Yes

you do need a jacket based on the weather in Perth Amboy, NJ, USA 1 second ago

Why? Because it's quite chilly.
49°F9°C & Mostly Cloudy

Wind is 7 mph12 km/h from the E, gusting to 13 mph21 km/h
April 25
12pm50°F10°C8 mph12 km/h EMostly Cloudy
1pm52°F11°C7 mph12 km/h EPartly Cloudy
2pm53°F12°C7 mph11 km/h EMostly Clear
3pm54°F12°C7 mph11 km/h SEMostly Clear
4pm55°F13°C7 mph11 km/h SEClear
5pm55°F13°C7 mph12 km/h SEMostly Clear
6pm54°F12°C8 mph12 km/h SEMostly Clear
7pm52°F11°C8 mph13 km/h SEMostly Clear
8pm49°F9°C8 mph12 km/h SEPartly Cloudy
9pm46°F8°C7 mph11 km/h SPartly Cloudy
10pm44°F7°C5 mph9 km/h SMostly Clear
11pm42°F6°C4 mph7 km/h SMostly Clear
DateLowHighWindDayNight
April 2541°F5°C56°F13°C7 mph12 km/h from EPartly CloudyMostly Clear
April 2637°F3°C60°F16°C7 mph11 km/h from SEClearClear
April 2738°F4°C63°F17°C8 mph13 km/h from SMostly CloudyCloudy
April 2847°F8°C77°F25°C6 mph10 km/h from SWMostly CloudyMostly Cloudy
April 2957°F14°C84°F29°C4 mph7 km/h from EPartly CloudyPartly Cloudy
April 3058°F14°C74°F23°C8 mph13 km/h from EPartly CloudyPartly Cloudy
May 155°F13°C80°F27°C7 mph11 km/h from WPartly CloudyMostly Clear

Yes

Low of 37°F3°C, High of 60°F16°C
Wind: 7 mph11 km/h
Precipitation: None

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