Yes

you do need a jacket based on the weather in Cambridge, MA 02139, USA 1 second ago

Why? Because the cold's there, but it's just a reminder, not an invasion and the wind is offering free, unsolicited face massages!
45°F7°C & Cloudy

Wind is 9 mph15 km/h from the East, gusting to 20 mph32 km/h
April 5
10am45°F7°C10 mph16 km/h EastCloudy
11am46°F8°C9 mph15 km/h SoutheastCloudy
12pm48°F9°C9 mph15 km/h SoutheastCloudy
1pm48°F9°C9 mph15 km/h SoutheastRain
2pm47°F8°C10 mph15 km/h SoutheastRain
3pm46°F8°C11 mph17 km/h SoutheastRain
4pm45°F7°C10 mph16 km/h SoutheastRain
5pm44°F7°C9 mph15 km/h SoutheastDrizzle
6pm43°F6°C9 mph14 km/h SoutheastDrizzle
7pm42°F6°C8 mph13 km/h SoutheastDrizzle
8pm42°F5°C7 mph12 km/h SoutheastDrizzle
9pm41°F5°C8 mph12 km/h SoutheastDrizzle
DateLowHighWindDayNight
April 541°F5°C52°F11°C9 mph15 km/h from SoutheastRainRain
April 642°F6°C57°F14°C5 mph9 km/h from WestDrizzleDrizzle
April 736°F2°C46°F8°C7 mph12 km/h from NortheastDrizzleDrizzle
April 829°F-2°C41°F5°C10 mph16 km/h from NorthwestMostly CloudyPartly Cloudy
April 928°F-2°C44°F7°C10 mph16 km/h from NorthwestPartly CloudyPartly Cloudy
April 1031°F-1°C49°F9°C8 mph12 km/h from SouthMostly ClearMostly Cloudy
April 1137°F3°C50°F10°C8 mph12 km/h from SoutheastPartly CloudyDrizzle

Yes

Low of 42°F6°C, High of 57°F14°C
Wind: 5 mph9 km/h
Precipitation: 58% rain

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