Yes

you do need a jacket based on the weather in Mississauga (Erin Mills), Ontario, Canada 1 second ago

Why? Because it's not very warm out!
56°F13°C & Mostly Cloudy

Wind is 2 mph4 km/h from the Northwest, gusting to 5 mph8 km/h
April 24
11am61°F16°C4 mph6 km/h SouthwestPartly Cloudy
12pm66°F19°C5 mph8 km/h SouthwestMostly Cloudy
1pm69°F21°C5 mph8 km/h SouthwestCloudy
2pm73°F23°C6 mph10 km/h SouthwestCloudy
3pm73°F23°C6 mph9 km/h SouthwestMostly Cloudy
4pm75°F24°C6 mph10 km/h SouthwestMostly Cloudy
5pm73°F23°C5 mph8 km/h WestPartly Cloudy
6pm72°F22°C6 mph9 km/h NorthwestMostly Clear
7pm70°F21°C4 mph7 km/h NorthMostly Clear
8pm67°F19°C4 mph6 km/h NorthMostly Clear
9pm63°F17°C6 mph9 km/h NorthPartly Cloudy
10pm60°F16°C7 mph11 km/h NorthPartly Cloudy
DateLowHighWindDayNight
April 2444°F7°C75°F24°C4 mph7 km/h from SouthwestMostly CloudyPartly Cloudy
April 2549°F10°C56°F14°C7 mph12 km/h from EastRainRain
April 2644°F7°C52°F11°C16 mph26 km/h from NorthwestDrizzleMostly Clear
April 2739°F4°C62°F17°C8 mph12 km/h from NorthwestClearPartly Cloudy
April 2841°F5°C65°F18°C7 mph11 km/h from SouthPartly CloudyPartly Cloudy
April 2950°F10°C75°F24°C15 mph25 km/h from SouthwestWindyMostly Cloudy
April 3045°F7°C59°F15°C6 mph9 km/h from NorthPartly CloudyPartly Cloudy

Yes

Low of 49°F10°C, High of 56°F14°C
Wind: 7 mph12 km/h
Precipitation: 41% rain

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