Yes
you do need a jacket based on the weather in St Helier, Jersey 1 second ago
Why? Because it's quite chilly and the wind is harsh and biting!
50°F10°C & Partly Cloudy
Wind is 14 mph22 km/h from the Northwest, gusting to 20 mph32 km/h
| December 14 | ||||
| 7pm | 50°F10°C | 14 mph22 km/h Northwest | Partly Cloudy | |
| 8pm | 50°F10°C | 15 mph24 km/h Northwest | Mostly Cloudy | |
| 9pm | 51°F10°C | 15 mph24 km/h Northwest | Windy | |
| 10pm | 51°F11°C | 16 mph26 km/h Northwest | Windy | |
| 11pm | 51°F11°C | 16 mph27 km/h West | Windy | |
| December 15 | ||||
| 12am | 52°F11°C | 17 mph27 km/h West | Windy | |
| 1am | 52°F11°C | 17 mph27 km/h West | Windy | |
| 2am | 52°F11°C | 17 mph27 km/h West | Windy | |
| 3am | 53°F12°C | 17 mph27 km/h West | Windy | |
| 4am | 53°F12°C | 17 mph27 km/h West | Windy | |
| 5am | 53°F12°C | 17 mph27 km/h West | Windy | |
| 6am | 54°F12°C | 17 mph27 km/h West | Windy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| December 13 | 44°F7°C | 50°F10°C | 15 mph24 km/h from Northwest | Mostly Cloudy | Windy |
| December 14 | 50°F10°C | 54°F12°C | 16 mph27 km/h from West | Windy | Mostly Cloudy |
| December 15 | 50°F10°C | 53°F11°C | 13 mph21 km/h from Southwest | Mostly Cloudy | Cloudy |
| December 16 | 47°F8°C | 53°F12°C | 19 mph30 km/h from South | Windy | Windy |
| December 17 | 53°F12°C | 56°F14°C | 23 mph37 km/h from Southwest | Rain | Rain |
| December 18 | 47°F8°C | 54°F12°C | 32 mph51 km/h from Northwest | Rain | Windy |
| December 19 | 47°F8°C | 49°F10°C | 15 mph24 km/h from West | Windy | Drizzle |
Yes
Low of 50°F10°C, High of 55°F13°CWind: 16 mph27 km/h
Precipitation: None