Yes

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

Why? Because there's a refreshing nip in the air.
48°F9°C & Cloudy

Wind is 8 mph13 km/h from the NE, gusting to 20 mph32 km/h
April 29
9pm49°F9°C8 mph13 km/h NECloudy
10pm49°F9°C7 mph12 km/h NECloudy
11pm49°F10°C6 mph10 km/h NERain
April 30
12am50°F10°C5 mph9 km/h NERain
1am49°F9°C4 mph6 km/h NERain
2am48°F9°C4 mph7 km/h NERain
3am48°F9°C3 mph6 km/h NEDrizzle
4am47°F9°C3 mph5 km/h EDrizzle
5am46°F8°C5 mph7 km/h ECloudy
6am47°F8°C3 mph5 km/h ERain
7am47°F8°C3 mph5 km/h EDrizzle
8am47°F9°C4 mph7 km/h ECloudy
DateLowHighWindDayNight
April 2946°F8°C54°F12°C10 mph16 km/h from ECloudyRain
April 3046°F8°C58°F15°C4 mph6 km/h from EDrizzleMostly Cloudy
May 146°F8°C65°F18°C6 mph9 km/h from SEPartly CloudyPartly Cloudy
May 249°F9°C68°F20°C4 mph6 km/h from NPartly CloudyMostly Clear
May 347°F8°C61°F16°C8 mph13 km/h from EMostly CloudyMostly Cloudy
May 450°F10°C66°F19°C5 mph9 km/h from EDrizzleDrizzle
May 552°F11°C72°F22°C8 mph13 km/h from SWDrizzlePartly Cloudy

Yes

Low of 46°F8°C, High of 58°F15°C
Wind: 4 mph6 km/h
Precipitation: 69% rain

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