Yes

you do need a jacket based on the weather in Burgess Hill, UK 1 second ago

Why? Because just cool enough for a jacket, but not warm enough to ditch it and it's windy enough to give you a brand new hairdo!
54°F12°C & Mostly Cloudy

Wind is 12 mph20 km/h from the West, gusting to 24 mph38 km/h
June 7
4am55°F13°C13 mph21 km/h WestMostly Cloudy
5am57°F14°C14 mph22 km/h WestMostly Cloudy
6am59°F15°C15 mph24 km/h SouthwestWindy
7am59°F15°C15 mph25 km/h SouthwestWindy
8am61°F16°C16 mph25 km/h SouthwestWindy
9am61°F16°C17 mph28 km/h SouthwestWindy
10am61°F16°C17 mph28 km/h SouthwestWindy
11am60°F16°C18 mph28 km/h SouthwestRain
12pm58°F15°C17 mph27 km/h SouthwestRain
1pm58°F14°C14 mph22 km/h SouthwestRain
2pm57°F14°C11 mph17 km/h SouthwestRain
3pm55°F13°C10 mph16 km/h WestRain
DateLowHighWindDayNight
June 651°F11°C61°F16°C15 mph24 km/h from SouthwestRainRain
June 747°F8°C63°F17°C14 mph22 km/h from WestPartly CloudyMostly Clear
June 849°F10°C65°F18°C10 mph16 km/h from SouthwestPartly CloudyMostly Cloudy
June 953°F12°C69°F20°C9 mph15 km/h from SouthwestMostly CloudyMostly Clear
June 1054°F12°C76°F24°C8 mph13 km/h from SoutheastPartly CloudyThunderstorms
June 1161°F16°C71°F22°C11 mph17 km/h from SouthwestDrizzlePartly Cloudy
June 1259°F15°C75°F24°C10 mph15 km/h from SouthwestDrizzlePartly Cloudy

Yes

Low of 46°F8°C, High of 63°F17°C
Wind: 14 mph22 km/h
Precipitation: 6% rain

Support This Page