Yes

you do need a jacket based on the weather in London Borough of Islington, London, UK 1 second ago

Why? Because sorry, it's too cool for just a hoodie!
58°F14°C & Cloudy

Wind is 6 mph9 km/h from the Northwest, gusting to 13 mph21 km/h
July 27
2am58°F14°C6 mph9 km/h NorthwestCloudy
3am59°F15°C6 mph10 km/h NorthwestCloudy
4am62°F16°C6 mph10 km/h NorthwestCloudy
5am64°F18°C6 mph10 km/h NorthwestCloudy
6am66°F19°C7 mph11 km/h NorthwestCloudy
7am68°F20°C7 mph12 km/h NorthwestMostly Cloudy
8am69°F21°C7 mph12 km/h NorthwestMostly Cloudy
9am70°F21°C8 mph13 km/h NorthwestMostly Cloudy
10am71°F21°C8 mph13 km/h NorthwestMostly Cloudy
11am71°F22°C8 mph13 km/h NorthwestMostly Cloudy
12pm70°F21°C8 mph13 km/h NorthwestMostly Cloudy
1pm69°F20°C8 mph12 km/h NorthwestMostly Cloudy
DateLowHighWindDayNight
July 2657°F14°C71°F22°C7 mph12 km/h from NorthwestMostly CloudyPartly Cloudy
July 2755°F13°C74°F24°C7 mph12 km/h from NorthwestPartly CloudyPartly Cloudy
July 2857°F14°C70°F21°C4 mph7 km/h from WestRainDrizzle
July 2958°F14°C74°F23°C5 mph8 km/h from NorthwestPartly CloudyPartly Cloudy
July 3059°F15°C75°F24°C7 mph11 km/h from WestMostly CloudyMostly Cloudy
July 3159°F15°C71°F22°C8 mph13 km/h from NorthwestDrizzleMostly Cloudy
August 156°F13°C69°F20°C7 mph11 km/h from NorthwestDrizzleMostly Cloudy

Yes

Low of 55°F13°C, High of 74°F24°C
Wind: 7 mph12 km/h
Precipitation: None

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