Yes

you do need a jacket based on the weather in Hatch End HA5, UK 1 second ago

Why? Because it's that kind of drizzle where you’re too stubborn to admit you’re getting wet and it's cool. Pleasantly cool, but cool and it's super windy outside!
57°F14°C & Drizzle

Wind is 12 mph20 km/h from the Southwest, gusting to 27 mph43 km/h
June 5
7am58°F14°C13 mph20 km/h SouthwestDrizzle
8am59°F15°C13 mph21 km/h SouthwestRain
9am60°F16°C13 mph21 km/h SouthwestCloudy
10am61°F16°C14 mph22 km/h SouthwestCloudy
11am62°F17°C13 mph21 km/h SouthwestCloudy
12pm61°F16°C12 mph19 km/h SouthwestCloudy
1pm61°F16°C10 mph16 km/h SouthwestCloudy
2pm60°F15°C9 mph15 km/h SouthwestCloudy
3pm59°F15°C9 mph14 km/h SouthwestCloudy
4pm57°F14°C8 mph14 km/h SouthwestCloudy
5pm56°F13°C9 mph14 km/h SouthwestCloudy
6pm55°F13°C9 mph14 km/h SouthwestCloudy
DateLowHighWindDayNight
June 453°F12°C62°F17°C11 mph18 km/h from SouthwestRainDrizzle
June 551°F10°C64°F18°C12 mph19 km/h from WestDrizzleRain
June 651°F11°C62°F16°C14 mph22 km/h from SouthwestRainPartly Cloudy
June 749°F9°C63°F17°C13 mph21 km/h from NorthwestPartly CloudyMostly Clear
June 849°F9°C66°F19°C10 mph16 km/h from WestMostly CloudyMostly Cloudy
June 953°F12°C70°F21°C7 mph12 km/h from WestMostly CloudyPartly Cloudy
June 1055°F13°C74°F23°C7 mph11 km/h from SoutheastMostly ClearPartly Cloudy

Yes

Low of 51°F11°C, High of 64°F18°C
Wind: 12 mph19 km/h
Precipitation: 43% rain

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