Yes

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

Why? Because it's cool. Pleasantly cool, but cool and the wind is offering free, unsolicited face massages!
53°F12°C & Cloudy

Wind is 9 mph15 km/h from the East, gusting to 20 mph32 km/h
April 18
7pm53°F11°C10 mph17 km/h EastCloudy
8pm52°F11°C10 mph16 km/h EastCloudy
9pm52°F11°C10 mph17 km/h EastCloudy
10pm52°F11°C11 mph18 km/h EastCloudy
11pm51°F11°C11 mph17 km/h EastCloudy
April 19
12am51°F11°C11 mph17 km/h EastCloudy
1am51°F11°C10 mph17 km/h EastCloudy
2am51°F11°C10 mph17 km/h EastCloudy
3am52°F11°C11 mph18 km/h EastCloudy
4am53°F12°C12 mph19 km/h EastCloudy
5am54°F12°C13 mph20 km/h EastCloudy
6am55°F13°C13 mph22 km/h EastCloudy
DateLowHighWindDayNight
April 1745°F7°C61°F16°C8 mph13 km/h from SouthCloudyCloudy
April 1845°F7°C59°F15°C14 mph22 km/h from EastCloudyMostly Cloudy
April 1942°F6°C58°F15°C9 mph14 km/h from EastCloudyPartly Cloudy
April 2044°F7°C60°F16°C5 mph8 km/h from WestDrizzlePartly Cloudy
April 2143°F6°C61°F16°C7 mph12 km/h from SouthwestMostly CloudyMostly Cloudy
April 2246°F8°C59°F15°C9 mph15 km/h from NortheastMostly CloudyPartly Cloudy
April 2345°F7°C61°F16°C9 mph14 km/h from NortheastMostly CloudyMostly Cloudy

Yes

Low of 46°F8°C, High of 59°F15°C
Wind: 14 mph22 km/h
Precipitation: None

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