Yes
you do need a jacket based on the weather in Chelmsford, MA, USA 1 second ago
Why? Because it's bitterly cold.
39°F4°C & Clear
Wind is 11 mph17 km/h from the NW, gusting to 29 mph46 km/h
| April 24 | ||||
| 11pm | 38°F3°C | 10 mph17 km/h NW | Clear | |
| April 25 | ||||
| 12am | 36°F2°C | 8 mph13 km/h NW | Clear | |
| 1am | 34°F1°C | 8 mph12 km/h N | Clear | |
| 2am | 32°F-0°C | 7 mph12 km/h N | Clear | |
| 3am | 30°F-1°C | 7 mph11 km/h N | Clear | |
| 4am | 29°F-2°C | 6 mph9 km/h N | Clear | |
| 5am | 28°F-2°C | 5 mph9 km/h NW | Clear | |
| 6am | 27°F-3°C | 5 mph8 km/h NW | Clear | |
| 7am | 30°F-1°C | 5 mph9 km/h N | Clear | |
| 8am | 33°F1°C | 7 mph11 km/h N | Clear | |
| 9am | 37°F3°C | 6 mph10 km/h N | Clear | |
| 10am | 41°F5°C | 6 mph9 km/h N | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 24 | 36°F2°C | 65°F19°C | 5 mph8 km/h from W | Mostly Cloudy | Clear |
| April 25 | 27°F-3°C | 56°F13°C | 5 mph8 km/h from N | Clear | Clear |
| April 26 | 30°F-1°C | 59°F15°C | 3 mph5 km/h from NE | Clear | Clear |
| April 27 | 34°F1°C | 65°F18°C | 5 mph7 km/h from S | Partly Cloudy | Drizzle |
| April 28 | 41°F5°C | 70°F21°C | 6 mph9 km/h from SW | Mostly Cloudy | Mostly Cloudy |
| April 29 | 52°F11°C | 80°F26°C | 5 mph7 km/h from NE | Mostly Cloudy | Mostly Cloudy |
| April 30 | 49°F9°C | 68°F20°C | 6 mph10 km/h from SE | Mostly Cloudy | Rain |
Yes
Low of 28°F-3°C, High of 56°F14°CWind: 5 mph8 km/h
Precipitation: None