Yes

you do need a jacket based on the weather in London W10 5QE, UK 1 second ago

Why? Because it's so windy, your hat is now someone else's problem, two cities away!
66°F19°C & Cloudy

Wind is 12 mph19 km/h from the Southwest, gusting to 27 mph44 km/h
September 17
2pm66°F19°C12 mph20 km/h SouthwestCloudy
3pm65°F18°C12 mph19 km/h SouthwestCloudy
4pm65°F18°C12 mph19 km/h SouthwestCloudy
5pm64°F18°C11 mph18 km/h SouthwestCloudy
6pm64°F18°C11 mph17 km/h SouthwestCloudy
7pm64°F18°C11 mph17 km/h SouthwestCloudy
8pm64°F18°C10 mph17 km/h SouthwestCloudy
9pm64°F18°C10 mph16 km/h SouthwestCloudy
10pm63°F17°C10 mph17 km/h SouthwestCloudy
11pm63°F17°C10 mph16 km/h SouthwestCloudy
September 18
12am63°F17°C10 mph15 km/h SouthwestCloudy
1am63°F17°C10 mph15 km/h SouthwestCloudy
DateLowHighWindDayNight
September 1656°F13°C66°F19°C10 mph15 km/h from SouthwestDrizzleCloudy
September 1763°F17°C72°F22°C12 mph19 km/h from SouthwestMostly CloudyMostly Cloudy
September 1860°F16°C77°F25°C7 mph12 km/h from SouthPartly CloudyPartly Cloudy
September 1957°F14°C74°F23°C7 mph12 km/h from SouthDrizzleDrizzle
September 2049°F9°C59°F15°C11 mph17 km/h from WestDrizzleDrizzle
September 2146°F8°C61°F16°C10 mph15 km/h from NortheastDrizzlePartly Cloudy
September 2247°F8°C59°F15°C10 mph16 km/h from NorthDrizzleRain

No

Low of 63°F17°C, High of 72°F22°C
Wind: 12 mph19 km/h
Precipitation: None

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