Yes

you do need a jacket based on the weather in Somerville, MA, USA 4 seconds ago

Why? Because it's raining in your area and sorry, it's too cool for just a hoodie and it's so windy, your hat is now someone else's problem, two cities away!
55°F13°C & Rain

Wind is 12 mph19 km/h from the Southwest, gusting to 29 mph47 km/h
November 8
5am55°F13°C11 mph18 km/h SouthwestRain
6am54°F12°C11 mph18 km/h SouthwestRain
7am54°F12°C11 mph18 km/h SouthwestDrizzle
8am53°F12°C9 mph15 km/h SouthwestCloudy
9am53°F12°C8 mph14 km/h SouthwestMostly Cloudy
10am52°F11°C7 mph11 km/h SouthwestCloudy
11am52°F11°C6 mph10 km/h SouthwestCloudy
12pm53°F11°C6 mph9 km/h SouthwestCloudy
1pm53°F12°C6 mph9 km/h SouthwestCloudy
2pm54°F12°C6 mph9 km/h WestCloudy
3pm56°F13°C7 mph11 km/h WestMostly Cloudy
4pm58°F14°C7 mph12 km/h WestMostly Cloudy
DateLowHighWindDayNight
November 731°F-1°C55°F13°C3 mph5 km/h from SouthPartly CloudyRain
November 843°F6°C60°F15°C8 mph12 km/h from WestPartly CloudyPartly Cloudy
November 939°F4°C56°F13°C9 mph15 km/h from EastRainRain
November 1039°F4°C58°F15°C5 mph8 km/h from WestRainRain
November 1132°F-0°C41°F5°C13 mph22 km/h from WestPartly CloudyMostly Clear
November 1234°F1°C46°F8°C10 mph16 km/h from SouthwestMostly CloudyPartly Cloudy
November 1337°F3°C49°F9°C10 mph15 km/h from WestPartly CloudyMostly Clear

Yes

Low of 43°F6°C, High of 60°F16°C
Wind: 8 mph12 km/h
Precipitation: None

Support This Page