Yes

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

Why? Because it's cool. Pleasantly cool, but cool and it's really really huffing out there!
56°F14°C & Windy

Wind is 16 mph25 km/h from the Northwest, gusting to 32 mph52 km/h
October 27
1pm57°F14°C16 mph25 km/h NorthwestWindy
2pm57°F14°C15 mph24 km/h NorthwestPartly Cloudy
3pm57°F14°C13 mph21 km/h NorthwestMostly Cloudy
4pm56°F13°C11 mph18 km/h WestPartly Cloudy
5pm54°F12°C10 mph15 km/h WestMostly Cloudy
6pm53°F12°C8 mph12 km/h WestMostly Cloudy
7pm52°F11°C8 mph13 km/h WestMostly Cloudy
8pm52°F11°C8 mph13 km/h SouthwestCloudy
9pm51°F11°C9 mph14 km/h SouthwestCloudy
10pm51°F11°C9 mph14 km/h SouthwestMostly Cloudy
11pm52°F11°C11 mph18 km/h SouthwestMostly Cloudy
October 28
12am53°F11°C13 mph20 km/h SouthwestCloudy
DateLowHighWindDayNight
October 2749°F10°C57°F14°C13 mph20 km/h from WestMostly CloudyCloudy
October 2852°F11°C58°F15°C13 mph20 km/h from WestMostly CloudyDrizzle
October 2946°F8°C56°F13°C8 mph13 km/h from SouthwestDrizzlePartly Cloudy
October 3043°F6°C57°F14°C8 mph13 km/h from SoutheastRainRain
October 3155°F13°C61°F16°C13 mph20 km/h from SouthwestPartly CloudyDrizzle
November 150°F10°C58°F15°C14 mph23 km/h from SouthwestRainPartly Cloudy
November 245°F7°C53°F12°C12 mph19 km/h from SouthwestDrizzleMostly Clear

Yes

Low of 52°F11°C, High of 58°F15°C
Wind: 13 mph20 km/h
Precipitation: None

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