Yes

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

Why? Because it's cool. Pleasantly cool, but cool!
58°F15°C & Mostly Cloudy

Wind is 6 mph10 km/h from the Northwest, gusting to 13 mph21 km/h
August 2
4am60°F15°C7 mph11 km/h NorthwestPartly Cloudy
5am63°F17°C7 mph11 km/h NorthwestMostly Clear
6am65°F18°C7 mph11 km/h NorthwestMostly Cloudy
7am66°F19°C6 mph10 km/h NorthwestMostly Cloudy
8am67°F19°C7 mph11 km/h NorthwestMostly Cloudy
9am68°F20°C8 mph12 km/h NorthwestMostly Cloudy
10am69°F20°C7 mph11 km/h NorthwestMostly Cloudy
11am69°F21°C7 mph11 km/h NorthwestMostly Cloudy
12pm70°F21°C7 mph11 km/h NorthwestPartly Cloudy
1pm70°F21°C7 mph11 km/h NorthwestPartly Cloudy
2pm69°F21°C6 mph10 km/h WestMostly Clear
3pm68°F20°C4 mph7 km/h WestMostly Clear
DateLowHighWindDayNight
August 152°F11°C70°F21°C7 mph11 km/h from NorthwestPartly CloudyMostly Clear
August 256°F13°C73°F23°C10 mph16 km/h from WestCloudyMostly Cloudy
August 360°F15°C74°F23°C12 mph20 km/h from SouthwestCloudyMostly Clear
August 454°F12°C71°F22°C12 mph20 km/h from NorthwestMostly ClearMostly Clear
August 553°F12°C72°F22°C4 mph6 km/h from SouthwestMostly CloudyCloudy
August 658°F14°C74°F23°C9 mph14 km/h from SouthwestMostly CloudyMostly Cloudy
August 758°F14°C73°F23°C11 mph17 km/h from WestPartly CloudyPartly Cloudy

Yes

Low of 55°F13°C, High of 73°F23°C
Wind: 10 mph16 km/h
Precipitation: 28% rain

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