Yes

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

Why? Because it's cold enough that makes you wish you had a hat, but you're still too proud to admit it!
36°F2°C & Partly Cloudy

Wind is 6 mph9 km/h from the Northwest, gusting to 12 mph20 km/h
October 25
9am36°F2°C6 mph9 km/h NorthwestPartly Cloudy
10am35°F2°C6 mph9 km/h NorthwestMostly Clear
11am35°F2°C5 mph9 km/h NorthwestMostly Clear
12pm35°F2°C6 mph9 km/h NorthwestMostly Clear
1pm38°F3°C7 mph11 km/h NorthwestPartly Cloudy
2pm41°F5°C7 mph12 km/h NorthwestPartly Cloudy
3pm43°F6°C8 mph13 km/h NorthwestPartly Cloudy
4pm45°F7°C8 mph13 km/h NorthwestPartly Cloudy
5pm46°F8°C8 mph13 km/h NorthwestMostly Cloudy
6pm47°F8°C8 mph13 km/h NorthwestMostly Cloudy
7pm47°F8°C8 mph13 km/h NorthwestMostly Cloudy
8pm46°F8°C8 mph13 km/h NorthwestMostly Cloudy
DateLowHighWindDayNight
October 2535°F2°C47°F8°C7 mph11 km/h from NorthwestPartly CloudyPartly Cloudy
October 2633°F0°C48°F9°C5 mph8 km/h from NorthPartly CloudyPartly Cloudy
October 2733°F1°C50°F10°C4 mph7 km/h from NortheastPartly CloudyPartly Cloudy
October 2834°F1°C52°F11°C6 mph10 km/h from EastMostly ClearMostly Clear
October 2932°F-0°C52°F11°C6 mph9 km/h from NortheastPartly CloudyMostly Cloudy
October 3039°F4°C50°F10°C8 mph13 km/h from NortheastRainRain
October 3141°F5°C51°F11°C9 mph15 km/h from WestRainPartly Cloudy

Yes

Low of 33°F1°C, High of 47°F9°C
Wind: 5 mph8 km/h
Precipitation: None

Support This Page