Yes

you do need a jacket based on the weather in Vancouver, BC, Canada 1 second ago

Why? Because the wind is harsh and biting!
71°F21°C & Mostly Clear

Wind is 12 mph19 km/h from the West, gusting to 22 mph35 km/h
September 17
8pm70°F21°C13 mph21 km/h WestClear
9pm68°F20°C13 mph21 km/h WestClear
10pm66°F19°C13 mph20 km/h WestClear
11pm65°F18°C12 mph20 km/h WestClear
September 18
12am64°F18°C12 mph19 km/h WestClear
1am63°F17°C11 mph18 km/h WestClear
2am62°F17°C6 mph10 km/h WestClear
3am61°F16°C5 mph8 km/h WestMostly Clear
4am60°F15°C4 mph7 km/h NorthwestMostly Clear
5am59°F15°C4 mph6 km/h NorthwestMostly Clear
6am58°F15°C3 mph5 km/h NorthwestMostly Clear
7am58°F14°C2 mph4 km/h NorthwestMostly Clear
DateLowHighWindDayNight
September 1761°F16°C73°F23°C7 mph11 km/h from WestClearMostly Clear
September 1857°F14°C68°F20°C4 mph6 km/h from WestMostly ClearClear
September 1956°F13°C70°F21°C3 mph5 km/h from WestMostly ClearPartly Cloudy
September 2057°F14°C67°F20°C7 mph11 km/h from SoutheastRainRain
September 2157°F14°C65°F18°C5 mph9 km/h from WestDrizzleRain
September 2254°F12°C64°F18°C5 mph7 km/h from SoutheastRainDrizzle
September 2357°F14°C69°F20°C4 mph7 km/h from WestDrizzlePartly Cloudy

Yes

Low of 56°F14°C, High of 68°F20°C
Wind: 4 mph6 km/h
Precipitation: None

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