Yes

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

Why? Because it's not very warm out.
51°F10°C & Cloudy

Wind is 4 mph6 km/h from the E, gusting to 9 mph14 km/h
April 30
11am51°F11°C4 mph7 km/h ECloudy
12pm53°F12°C4 mph7 km/h SECloudy
1pm55°F13°C4 mph7 km/h SECloudy
2pm56°F13°C5 mph8 km/h SECloudy
3pm57°F14°C5 mph8 km/h SECloudy
4pm58°F15°C5 mph8 km/h SEMostly Cloudy
5pm59°F15°C5 mph8 km/h EMostly Cloudy
6pm57°F14°C5 mph9 km/h EMostly Cloudy
7pm56°F13°C5 mph8 km/h EMostly Cloudy
8pm55°F13°C5 mph8 km/h NEMostly Cloudy
9pm54°F12°C5 mph8 km/h NEMostly Cloudy
10pm53°F12°C5 mph8 km/h NEMostly Cloudy
DateLowHighWindDayNight
April 3047°F9°C59°F15°C4 mph7 km/h from ECloudyMostly Cloudy
May 147°F8°C61°F16°C6 mph9 km/h from SEMostly CloudyPartly Cloudy
May 249°F9°C66°F19°C5 mph9 km/h from WPartly CloudyMostly Clear
May 349°F10°C65°F18°C12 mph19 km/h from EPartly CloudyRain
May 452°F11°C67°F20°C6 mph10 km/h from SERainRain
May 553°F12°C65°F19°C5 mph8 km/h from ERainPartly Cloudy
May 650°F10°C66°F19°C6 mph10 km/h from SEMostly ClearMostly Clear

Yes

Low of 47°F9°C, High of 61°F16°C
Wind: 6 mph9 km/h
Precipitation: None

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