Yes

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

Why? Because it's cool enough your breath is visible, but your nose isn’t red yet!

33°F0°C & Mostly Cloudy

Wind is 2 mph3 km/h from the Southeast, gusting to 3 mph5 km/h

Date	Low	High	Wind	Day	Night
February 7	23°F-5°C	34°F1°C	3 mph4 km/h from East	Mostly Cloudy	Mostly Cloudy
February 8	28°F-2°C	37°F3°C	3 mph5 km/h from West	Partly Cloudy	Mostly Clear
February 9	25°F-4°C	36°F2°C	2 mph4 km/h from Northwest	Partly Cloudy	Mostly Clear
February 10	22°F-5°C	35°F2°C	5 mph8 km/h from Northeast	Clear	Clear
February 11	18°F-8°C	34°F1°C	2 mph4 km/h from Southeast	Clear	Clear
February 12	19°F-7°C	35°F2°C	2 mph3 km/h from North	Clear	Partly Cloudy
February 13	22°F-6°C	37°F3°C	2 mph4 km/h from Northwest	Mostly Cloudy	Mostly Cloudy

Low of 28°F-3°C, High of 37°F3°C
Wind: 3 mph5 km/h
Precipitation: None