Yes

you do need a jacket based on the weather in Chelsea, MA 02150, USA 1 second ago

Why? Because you're not freezing, but you’ll definitely start complaining if it lasts much longer and it's fairly windy outside!
41°F5°C & Cloudy

Wind is 10 mph16 km/h from the West, gusting to 24 mph39 km/h
April 17
12am40°F5°C9 mph15 km/h WestMostly Clear
1am39°F4°C9 mph14 km/h WestMostly Clear
2am39°F4°C9 mph15 km/h WestMostly Clear
3am38°F4°C9 mph14 km/h WestMostly Clear
4am38°F3°C9 mph14 km/h WestClear
5am38°F3°C9 mph15 km/h WestClear
6am38°F3°C9 mph14 km/h WestClear
7am39°F4°C9 mph14 km/h WestClear
8am41°F5°C10 mph16 km/h WestClear
9am44°F7°C11 mph18 km/h WestClear
10am47°F8°C11 mph18 km/h WestClear
11am50°F10°C11 mph18 km/h WestClear
DateLowHighWindDayNight
April 1640°F5°C53°F12°C9 mph14 km/h from WestMostly CloudyMostly Clear
April 1738°F3°C56°F13°C11 mph18 km/h from NorthwestClearMostly Clear
April 1837°F3°C62°F17°C9 mph14 km/h from SouthwestPartly CloudyDrizzle
April 1950°F10°C76°F24°C12 mph20 km/h from SouthwestMostly CloudyPartly Cloudy
April 2046°F8°C64°F18°C12 mph19 km/h from NorthwestPartly CloudyPartly Cloudy
April 2140°F5°C54°F12°C6 mph10 km/h from EastPartly CloudyRain
April 2242°F6°C58°F14°C7 mph12 km/h from EastRainPartly Cloudy

Yes

Low of 37°F3°C, High of 56°F14°C
Wind: 11 mph18 km/h
Precipitation: None

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