Yes

you do need a jacket based on the weather in Oakville, ON, Canada 20 seconds ago

Why? Because this drizzle is just a polite way of saying, “Get ready, the big stuff's coming.”!
64°F18°C & Drizzle

Wind is 4 mph7 km/h from the North, gusting to 9 mph14 km/h
June 5
4am64°F18°C5 mph8 km/h NorthDrizzle
5am62°F17°C5 mph8 km/h NorthDrizzle
6am61°F16°C5 mph8 km/h NortheastDrizzle
7am61°F16°C6 mph10 km/h NortheastDrizzle
8am61°F16°C6 mph10 km/h NorthDrizzle
9am61°F16°C7 mph11 km/h NorthRain
10am61°F16°C7 mph12 km/h NorthCloudy
11am61°F16°C7 mph11 km/h NorthCloudy
12pm62°F17°C6 mph9 km/h NorthCloudy
1pm64°F18°C6 mph9 km/h NorthCloudy
2pm65°F18°C5 mph8 km/h NorthCloudy
3pm65°F18°C5 mph8 km/h NorthCloudy
DateLowHighWindDayNight
June 559°F15°C70°F21°C5 mph9 km/h from NorthRainDrizzle
June 656°F14°C68°F20°C5 mph7 km/h from EastMostly CloudyPartly Cloudy
June 757°F14°C71°F21°C7 mph11 km/h from NorthMostly ClearPartly Cloudy
June 854°F12°C65°F18°C9 mph14 km/h from EastPartly CloudyDrizzle
June 955°F13°C70°F21°C9 mph15 km/h from SouthwestDrizzleDrizzle
June 1056°F14°C69°F21°C6 mph10 km/h from SouthwestPartly CloudyMostly Clear
June 1155°F13°C74°F23°C5 mph8 km/h from WestMostly ClearClear

Yes

Low of 56°F14°C, High of 68°F20°C
Wind: 5 mph7 km/h
Precipitation: None

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