Yes

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

Why? Because it's not very warm out.
50°F10°C & Cloudy

Wind is 7 mph12 km/h from the E, gusting to 18 mph29 km/h
May 4
11pm50°F10°C8 mph13 km/h EDrizzle
May 5
12am49°F10°C8 mph12 km/h EDrizzle
1am49°F9°C8 mph12 km/h ECloudy
2am48°F9°C7 mph12 km/h EDrizzle
3am48°F9°C7 mph12 km/h ECloudy
4am47°F9°C7 mph12 km/h ECloudy
5am47°F8°C7 mph12 km/h ECloudy
6am48°F9°C8 mph12 km/h ECloudy
7am48°F9°C8 mph13 km/h ECloudy
8am49°F10°C9 mph14 km/h SECloudy
9am50°F10°C9 mph15 km/h SECloudy
10am52°F11°C10 mph15 km/h SEDrizzle
DateLowHighWindDayNight
May 444°F7°C59°F15°C3 mph4 km/h from ECloudyRain
May 547°F8°C57°F14°C8 mph14 km/h from SERainDrizzle
May 657°F14°C76°F24°C4 mph6 km/h from WMostly CloudyMostly Cloudy
May 756°F14°C77°F25°C4 mph7 km/h from SEPartly CloudyMostly Cloudy
May 858°F15°C79°F26°C10 mph16 km/h from SWMostly CloudyPartly Cloudy
May 956°F13°C67°F19°C7 mph11 km/h from ERainCloudy
May 1053°F12°C65°F19°C6 mph9 km/h from SEMostly CloudyDrizzle

Yes

Low of 47°F9°C, High of 57°F14°C
Wind: 8 mph14 km/h
Precipitation: 77% rain

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