No
you don't need a jacket based on the weather in Chelmsford, MA, USA 1 second ago
70°F21°C & Cloudy
Wind is 8 mph13 km/h from the Southwest, gusting to 17 mph27 km/h
| May 7 | ||||
| 6pm | 68°F20°C | 8 mph13 km/h West | Partly Cloudy | |
| 7pm | 66°F19°C | 6 mph9 km/h West | Mostly Clear | |
| 8pm | 63°F17°C | 5 mph8 km/h West | Partly Cloudy | |
| 9pm | 62°F16°C | 5 mph9 km/h West | Mostly Cloudy | |
| 10pm | 60°F15°C | 6 mph9 km/h West | Clear | |
| 11pm | 58°F14°C | 6 mph10 km/h West | Clear | |
| May 8 | ||||
| 12am | 57°F14°C | 5 mph8 km/h West | Clear | |
| 1am | 56°F13°C | 5 mph8 km/h West | Clear | |
| 2am | 55°F13°C | 5 mph8 km/h West | Clear | |
| 3am | 54°F12°C | 5 mph7 km/h West | Mostly Clear | |
| 4am | 53°F12°C | 4 mph7 km/h West | Partly Cloudy | |
| 5am | 53°F12°C | 4 mph6 km/h West | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| May 7 | 55°F13°C | 72°F22°C | 5 mph8 km/h from Southwest | Partly Cloudy | Mostly Clear |
| May 8 | 53°F12°C | 71°F22°C | 4 mph7 km/h from North | Mostly Cloudy | Drizzle |
| May 9 | 47°F8°C | 55°F13°C | 9 mph14 km/h from East | Rain | Rain |
| May 10 | 47°F8°C | 63°F17°C | 11 mph17 km/h from Northwest | Rain | Clear |
| May 11 | 48°F9°C | 69°F21°C | 8 mph13 km/h from Northwest | Mostly Clear | Clear |
| May 12 | 44°F7°C | 72°F22°C | 8 mph13 km/h from Southwest | Mostly Clear | Partly Cloudy |
| May 13 | 52°F11°C | 75°F24°C | 6 mph10 km/h from Southwest | Cloudy | Cloudy |
Yes
Low of 53°F12°C, High of 71°F22°CWind: 4 mph7 km/h
Precipitation: 14% rain