Yes

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

Why? Because the temperature has dropped below freezing!
32°F-0°C & Mostly Clear

Wind is 6 mph9 km/h from the South, gusting to 14 mph22 km/h
October 26
11am32°F-0°C6 mph9 km/h SouthMostly Clear
12pm32°F-0°C6 mph9 km/h SouthMostly Clear
1pm33°F1°C6 mph10 km/h SouthMostly Clear
2pm37°F3°C7 mph11 km/h SouthMostly Clear
3pm42°F5°C7 mph11 km/h SouthMostly Clear
4pm46°F8°C8 mph12 km/h SouthClear
5pm51°F11°C8 mph13 km/h SouthClear
6pm55°F13°C8 mph13 km/h SouthMostly Clear
7pm56°F13°C8 mph14 km/h SouthClear
8pm57°F14°C8 mph13 km/h SouthClear
9pm55°F13°C8 mph12 km/h SouthClear
10pm51°F11°C7 mph11 km/h SouthMostly Clear
DateLowHighWindDayNight
October 2632°F-0°C57°F14°C7 mph12 km/h from SouthMostly ClearMostly Clear
October 2739°F4°C58°F15°C8 mph13 km/h from SouthMostly ClearMostly Clear
October 2835°F2°C53°F11°C6 mph10 km/h from SouthMostly ClearMostly Clear
October 2932°F0°C52°F11°C3 mph5 km/h from SouthwestPartly CloudyPartly Cloudy
October 3033°F1°C49°F10°C3 mph5 km/h from WestPartly CloudyMostly Cloudy
October 3132°F0°C44°F7°C6 mph10 km/h from NortheastCloudyMostly Cloudy
November 134°F1°C42°F6°C8 mph13 km/h from NorthwestCloudyMostly Cloudy

Yes

Low of 39°F4°C, High of 58°F15°C
Wind: 8 mph13 km/h
Precipitation: None

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