No

you don't need a jacket based on the weather in Vancouver, BC, Canada 1 second ago

67°F19°C & Mostly Cloudy

Wind is 4 mph7 km/h from the West, gusting to 12 mph20 km/h
July 3
12am67°F19°C4 mph7 km/h WestMostly Clear
1am65°F18°C4 mph7 km/h WestMostly Clear
2am63°F17°C8 mph12 km/h WestMostly Clear
3am62°F17°C8 mph14 km/h WestMostly Clear
4am60°F16°C8 mph14 km/h WestMostly Clear
5am59°F15°C8 mph14 km/h WestMostly Clear
6am58°F14°C8 mph13 km/h WestMostly Clear
7am56°F13°C6 mph9 km/h SoutheastPartly Cloudy
8am55°F13°C5 mph8 km/h EastPartly Cloudy
9am55°F13°C5 mph9 km/h EastPartly Cloudy
10am55°F13°C5 mph9 km/h EastPartly Cloudy
11am57°F14°C5 mph8 km/h SoutheastMostly Cloudy
DateLowHighWindDayNight
July 257°F14°C73°F23°C5 mph7 km/h from SouthPartly CloudyPartly Cloudy
July 355°F13°C68°F20°C5 mph8 km/h from SouthwestMostly CloudyMostly Clear
July 456°F13°C71°F22°C5 mph8 km/h from SouthwestPartly CloudyPartly Cloudy
July 555°F13°C69°F21°C6 mph9 km/h from SouthMostly CloudyPartly Cloudy
July 658°F14°C72°F22°C5 mph8 km/h from SouthwestMostly ClearMostly Clear
July 759°F15°C74°F23°C4 mph7 km/h from WestMostly ClearClear
July 861°F16°C78°F25°C4 mph7 km/h from WestClearClear

Yes

Low of 55°F13°C, High of 68°F20°C
Wind: 5 mph8 km/h
Precipitation: None

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