No

you don't need a jacket based on the weather in Toronto, ON, Canada 24 minutes ago

64°F18°C & Cloudy

Wind is 11 mph18 km/h from the E, gusting to 20 mph32 km/h
May 4
5pm64°F18°C11 mph18 km/h EPartly Cloudy
6pm64°F18°C10 mph17 km/h EPartly Cloudy
7pm63°F17°C10 mph15 km/h EPartly Cloudy
8pm61°F16°C9 mph15 km/h EPartly Cloudy
9pm60°F15°C7 mph12 km/h EMostly Cloudy
10pm59°F15°C6 mph9 km/h SEPartly Cloudy
11pm57°F14°C5 mph9 km/h SEMostly Cloudy
May 5
12am56°F13°C5 mph9 km/h SEMostly Cloudy
1am56°F13°C6 mph9 km/h SECloudy
2am55°F13°C6 mph10 km/h SECloudy
3am55°F13°C6 mph10 km/h SECloudy
4am54°F12°C6 mph10 km/h SEDrizzle
DateLowHighWindDayNight
May 454°F12°C66°F19°C8 mph13 km/h from EPartly CloudyRain
May 553°F12°C65°F18°C5 mph7 km/h from SERainPartly Cloudy
May 648°F9°C69°F21°C5 mph8 km/h from NWMostly ClearClear
May 748°F9°C66°F19°C6 mph10 km/h from EMostly ClearRain
May 850°F10°C68°F20°C9 mph14 km/h from SWRainPartly Cloudy
May 950°F10°C57°F14°C9 mph14 km/h from NEDrizzleRain
May 1049°F10°C60°F16°C8 mph14 km/h from NWPartly CloudyMostly Cloudy

Yes

Low of 53°F12°C, High of 64°F18°C
Wind: 5 mph7 km/h
Precipitation: 84% rain

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