No

you don't need a jacket based on the weather in Raritan, NJ 08869, USA 1 second ago

60°F16°C & Cloudy

Wind is 6 mph10 km/h from the Northwest, gusting to 17 mph27 km/h
May 25
9pm59°F15°C6 mph10 km/h NorthwestMostly Cloudy
10pm57°F14°C6 mph9 km/h NorthwestMostly Clear
11pm55°F13°C7 mph11 km/h NorthwestMostly Clear
May 26
12am54°F12°C5 mph9 km/h NorthwestMostly Clear
1am52°F11°C5 mph8 km/h NorthwestClear
2am51°F10°C4 mph7 km/h NorthwestClear
3am50°F10°C5 mph7 km/h NorthwestClear
4am48°F9°C4 mph7 km/h NorthwestClear
5am48°F9°C5 mph7 km/h NorthwestClear
6am48°F9°C4 mph7 km/h NorthwestClear
7am51°F11°C5 mph8 km/h NorthwestClear
8am55°F13°C6 mph10 km/h NorthwestClear
DateLowHighWindDayNight
May 2546°F8°C69°F21°C5 mph8 km/h from NorthwestPartly CloudyMostly Clear
May 2648°F9°C71°F22°C4 mph7 km/h from NorthMostly ClearMostly Clear
May 2750°F10°C73°F23°C3 mph5 km/h from SouthCloudyCloudy
May 2853°F12°C61°F16°C6 mph10 km/h from EastRainDrizzle
May 2955°F13°C70°F21°C5 mph8 km/h from SouthDrizzleDrizzle
May 3057°F14°C73°F23°C9 mph14 km/h from WestPartly CloudyDrizzle
May 3157°F14°C71°F22°C9 mph14 km/h from WestDrizzleMostly Clear

Yes

Low of 47°F9°C, High of 71°F22°C
Wind: 4 mph7 km/h
Precipitation: None

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