Yes

you do need a jacket based on the weather in Etobicoke, Toronto, ON, Canada 1 second ago

Why? Because it's not very warm out and it's windy enough to give you a brand new hairdo!
56°F14°C & Cloudy

Wind is 9 mph15 km/h from the East, gusting to 22 mph36 km/h
October 12
2pm57°F14°C10 mph16 km/h EastCloudy
3pm60°F16°C12 mph20 km/h EastCloudy
4pm62°F17°C13 mph21 km/h EastCloudy
5pm64°F18°C13 mph20 km/h EastMostly Cloudy
6pm64°F18°C13 mph21 km/h EastPartly Cloudy
7pm65°F18°C13 mph20 km/h EastPartly Cloudy
8pm65°F18°C13 mph20 km/h EastMostly Clear
9pm64°F18°C12 mph19 km/h EastClear
10pm63°F17°C10 mph17 km/h EastClear
11pm61°F16°C9 mph15 km/h EastClear
October 13
12am59°F15°C8 mph13 km/h EastMostly Clear
1am58°F15°C7 mph12 km/h EastClear
DateLowHighWindDayNight
October 1251°F10°C65°F18°C10 mph17 km/h from EastPartly CloudyMostly Clear
October 1353°F12°C65°F18°C7 mph11 km/h from EastMostly ClearClear
October 1449°F9°C70°F21°C4 mph7 km/h from NorthwestMostly ClearMostly Cloudy
October 1544°F7°C55°F13°C11 mph18 km/h from NorthMostly ClearMostly Clear
October 1640°F4°C58°F14°C7 mph11 km/h from NorthMostly ClearMostly Clear
October 1740°F5°C59°F15°C4 mph7 km/h from SouthPartly CloudyMostly Cloudy
October 1852°F11°C66°F19°C7 mph12 km/h from SouthDrizzleRain

Yes

Low of 53°F12°C, High of 65°F19°C
Wind: 7 mph11 km/h
Precipitation: None

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