Yes

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

Why? Because it's not very warm out!
50°F10°C & Partly Cloudy

Wind is 7 mph11 km/h from the South, gusting to 11 mph17 km/h
November 2
6pm51°F10°C7 mph11 km/h SouthMostly Clear
7pm50°F10°C7 mph11 km/h SouthPartly Cloudy
8pm50°F10°C6 mph10 km/h SouthPartly Cloudy
9pm49°F9°C5 mph7 km/h SouthMostly Clear
10pm46°F8°C4 mph6 km/h SoutheastMostly Clear
11pm44°F7°C4 mph7 km/h SoutheastMostly Clear
November 3
12am43°F6°C5 mph7 km/h SoutheastMostly Clear
1am44°F7°C5 mph8 km/h SoutheastMostly Clear
2am45°F7°C5 mph8 km/h SouthwestMostly Clear
3am45°F7°C7 mph11 km/h SouthwestPartly Cloudy
4am44°F7°C7 mph11 km/h SouthwestMostly Clear
5am44°F7°C7 mph11 km/h SouthwestMostly Clear
DateLowHighWindDayNight
November 228°F-2°C51°F10°C4 mph7 km/h from SouthMostly ClearPartly Cloudy
November 342°F5°C49°F10°C17 mph27 km/h from SouthwestDrizzleMostly Clear
November 440°F4°C53°F12°C13 mph21 km/h from WestMostly ClearMostly Cloudy
November 539°F4°C50°F10°C8 mph12 km/h from WestDrizzlePartly Cloudy
November 637°F3°C48°F9°C9 mph14 km/h from NorthwestPartly CloudyMostly Cloudy
November 737°F3°C54°F12°C10 mph16 km/h from SouthRainThunderstorms
November 840°F4°C48°F9°C12 mph19 km/h from WestMostly CloudyDrizzle

Yes

Low of 42°F6°C, High of 49°F10°C
Wind: 17 mph27 km/h
Precipitation: 67% rain

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