Yes

you do need a jacket based on the weather in Vancouver, BC, Canada 16 minutes ago

Why? Because it's raining out and it's not very warm out!
51°F11°C & Rain

Wind is 8 mph13 km/h from the E, gusting to 15 mph24 km/h
October 19
10am52°F11°C8 mph13 km/h EHeavy Rain
11am53°F12°C9 mph14 km/h SERain
12pm54°F12°C10 mph15 km/h SERain
1pm54°F12°C11 mph17 km/h SERain
2pm56°F13°C10 mph16 km/h SEHeavy Rain
3pm56°F14°C10 mph17 km/h SERain
4pm57°F14°C10 mph16 km/h SERain
5pm58°F14°C10 mph15 km/h SRain
6pm58°F14°C8 mph13 km/h SERain
7pm58°F14°C7 mph11 km/h SERain
8pm58°F15°C6 mph10 km/h SERain
9pm58°F14°C5 mph9 km/h SERain
DateLowHighWindDayNight
October 1948°F9°C58°F15°C9 mph14 km/h from SEHeavy RainRain
October 2048°F9°C57°F14°C7 mph12 km/h from SWRainPartly Cloudy
October 2145°F7°C52°F11°C3 mph5 km/h from WDrizzlePartly Cloudy
October 2241°F5°C53°F11°C4 mph6 km/h from WMostly ClearMostly Clear
October 2339°F4°C52°F11°C3 mph5 km/h from WMostly ClearPartly Cloudy
October 2441°F5°C52°F11°C4 mph6 km/h from WMostly CloudyDrizzle
October 2545°F7°C53°F11°C3 mph5 km/h from NWRainDrizzle

Yes

Low of 48°F9°C, High of 57°F14°C
Wind: 7 mph12 km/h
Precipitation: 88% rain

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