Yes

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

Why? Because sorry, it's too cool for just a hoodie!
52°F11°C & Cloudy

Wind is 4 mph6 km/h from the West, gusting to 9 mph14 km/h
October 25
10pm51°F11°C4 mph6 km/h WestCloudy
11pm49°F10°C5 mph8 km/h NorthwestCloudy
October 26
12am48°F9°C7 mph12 km/h NorthCloudy
1am47°F8°C8 mph12 km/h NorthMostly Cloudy
2am46°F8°C8 mph12 km/h NorthMostly Cloudy
3am45°F7°C8 mph14 km/h NorthMostly Cloudy
4am44°F7°C9 mph14 km/h NorthMostly Cloudy
5am44°F6°C8 mph13 km/h NorthMostly Cloudy
6am42°F6°C8 mph13 km/h NorthPartly Cloudy
7am41°F5°C8 mph13 km/h NorthPartly Cloudy
8am41°F5°C7 mph12 km/h NorthPartly Cloudy
9am40°F4°C7 mph11 km/h NorthPartly Cloudy
DateLowHighWindDayNight
October 2540°F4°C55°F13°C6 mph9 km/h from WestMostly CloudyMostly Cloudy
October 2640°F4°C50°F10°C7 mph12 km/h from NortheastPartly CloudyPartly Cloudy
October 2737°F3°C51°F11°C10 mph16 km/h from EastPartly CloudyMostly Clear
October 2838°F3°C54°F12°C12 mph19 km/h from EastMostly ClearMostly Clear
October 2937°F3°C55°F13°C10 mph16 km/h from EastMostly ClearRain
October 3042°F5°C51°F11°C15 mph24 km/h from EastRainRain
October 3145°F7°C52°F11°C16 mph26 km/h from NorthwestDrizzleWindy

Yes

Low of 40°F5°C, High of 50°F10°C
Wind: 7 mph12 km/h
Precipitation: None

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