Yes

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

Why? Because rain's coming down and the cold's there, but it's just a reminder, not an invasion and the wind is harsh and biting!
44°F7°C & Rain

Wind is 12 mph19 km/h from the Northeast, gusting to 24 mph38 km/h
October 30
4pm44°F7°C13 mph21 km/h NortheastRain
5pm45°F7°C15 mph24 km/h NortheastDrizzle
6pm45°F7°C15 mph25 km/h NortheastDrizzle
7pm44°F7°C16 mph26 km/h NortheastDrizzle
8pm44°F6°C15 mph24 km/h NortheastDrizzle
9pm43°F6°C14 mph23 km/h NortheastRain
10pm42°F5°C15 mph23 km/h NorthRain
11pm41°F5°C15 mph24 km/h NorthRain
October 31
12am40°F5°C14 mph23 km/h NorthRain
1am40°F4°C14 mph22 km/h NorthRain
2am40°F4°C13 mph21 km/h NorthDrizzle
3am40°F4°C13 mph21 km/h NorthDrizzle
DateLowHighWindDayNight
October 3039°F4°C45°F7°C13 mph21 km/h from NortheastRainRain
October 3139°F4°C47°F8°C17 mph28 km/h from NorthwestWindyMostly Cloudy
November 136°F2°C45°F7°C7 mph11 km/h from NorthwestMostly CloudyPartly Cloudy
November 232°F0°C49°F10°C5 mph9 km/h from SouthwestPartly CloudyMostly Cloudy
November 339°F4°C50°F10°C18 mph29 km/h from SouthwestDrizzleMostly Clear
November 437°F3°C51°F10°C14 mph22 km/h from WestMostly ClearPartly Cloudy
November 536°F2°C50°F10°C8 mph13 km/h from SouthCloudyMostly Cloudy

Yes

Low of 39°F4°C, High of 47°F9°C
Wind: 17 mph28 km/h
Precipitation: None

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