No

you don't need a jacket based on the weather in Oakville, ON, Canada 1 second ago

70°F21°C & Cloudy

Wind is 4 mph6 km/h from the Northeast, gusting to 6 mph10 km/h
June 30
9pm70°F21°C4 mph7 km/h NortheastMostly Cloudy
10pm69°F21°C4 mph6 km/h SoutheastDrizzle
11pm68°F20°C3 mph4 km/h WestDrizzle
July 1
12am68°F20°C3 mph5 km/h WestDrizzle
1am68°F20°C4 mph6 km/h WestDrizzle
2am69°F20°C5 mph7 km/h SouthwestPartly Cloudy
3am68°F20°C6 mph9 km/h SouthwestPartly Cloudy
4am68°F20°C7 mph11 km/h WestMostly Cloudy
5am68°F20°C6 mph10 km/h WestMostly Cloudy
6am68°F20°C6 mph10 km/h WestMostly Cloudy
7am69°F21°C7 mph11 km/h WestMostly Cloudy
8am70°F21°C7 mph11 km/h WestMostly Cloudy
DateLowHighWindDayNight
June 3061°F16°C77°F25°C3 mph5 km/h from SoutheastDrizzleMostly Cloudy
July 168°F20°C82°F28°C8 mph13 km/h from WestMostly CloudyClear
July 263°F17°C81°F27°C6 mph10 km/h from WestMostly ClearMostly Clear
July 363°F17°C78°F26°C8 mph13 km/h from NorthwestMostly ClearClear
July 459°F15°C79°F26°C4 mph6 km/h from SouthMostly ClearPartly Cloudy
July 564°F18°C86°F30°C7 mph11 km/h from SouthPartly CloudyPartly Cloudy
July 670°F21°C87°F31°C10 mph16 km/h from SouthwestThunderstormsDrizzle

No

Low of 68°F20°C, High of 82°F28°C
Wind: 8 mph13 km/h
Precipitation: 11% rain

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