Yes

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

Why? Because there's a refreshing nip in the air and it's on the windy side!
50°F10°C & Mostly Cloudy

Wind is 9 mph14 km/h from the North, gusting to 22 mph35 km/h
October 14
1pm50°F10°C10 mph15 km/h NorthRain
2pm51°F11°C9 mph14 km/h NorthCloudy
3pm54°F12°C9 mph14 km/h NortheastCloudy
4pm56°F13°C9 mph15 km/h NortheastMostly Cloudy
5pm58°F14°C9 mph14 km/h NortheastPartly Cloudy
6pm59°F15°C8 mph13 km/h NortheastMostly Cloudy
7pm57°F14°C6 mph10 km/h NorthMostly Cloudy
8pm57°F14°C6 mph10 km/h NorthCloudy
9pm57°F14°C5 mph9 km/h NorthCloudy
10pm56°F13°C4 mph7 km/h NorthCloudy
11pm55°F13°C4 mph6 km/h NorthCloudy
October 15
12am55°F13°C4 mph6 km/h NorthCloudy
DateLowHighWindDayNight
October 1448°F9°C59°F15°C8 mph12 km/h from NorthRainMostly Cloudy
October 1543°F6°C59°F15°C10 mph17 km/h from NorthwestMostly CloudyMostly Clear
October 1639°F4°C52°F11°C12 mph19 km/h from NorthMostly ClearMostly Clear
October 1738°F4°C58°F15°C7 mph11 km/h from NorthwestMostly ClearMostly Clear
October 1839°F4°C61°F16°C3 mph6 km/h from SouthwestPartly CloudyPartly Cloudy
October 1950°F10°C71°F22°C9 mph14 km/h from SouthPartly CloudyThunderstorms
October 2051°F10°C61°F16°C10 mph16 km/h from SouthwestRainMostly Clear

Yes

Low of 43°F6°C, High of 60°F16°C
Wind: 10 mph17 km/h
Precipitation: None

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