No

you don't need a jacket based on the weather in Ottawa, ON, Canada 1 second ago

61°F16°C & Cloudy

Wind is 2 mph4 km/h from the SE, gusting to 6 mph10 km/h
May 25
11am62°F17°C3 mph4 km/h SEMostly Cloudy
12pm64°F18°C3 mph4 km/h SMostly Cloudy
1pm65°F19°C3 mph5 km/h SMostly Cloudy
2pm67°F20°C3 mph5 km/h SMostly Cloudy
3pm69°F20°C4 mph6 km/h SEMostly Cloudy
4pm68°F20°C4 mph7 km/h SCloudy
5pm67°F20°C3 mph5 km/h SCloudy
6pm66°F19°C2 mph4 km/h SECloudy
7pm64°F18°C3 mph6 km/h NCloudy
8pm62°F16°C5 mph7 km/h NEDrizzle
9pm61°F16°C4 mph7 km/h NECloudy
10pm60°F15°C4 mph7 km/h NEMostly Cloudy
DateLowHighWindDayNight
May 2546°F8°C69°F20°C3 mph5 km/h from SEMostly CloudyDrizzle
May 2655°F13°C77°F25°C2 mph3 km/h from EPartly CloudyMostly Cloudy
May 2758°F15°C67°F19°C12 mph19 km/h from EHeavy RainRain
May 2856°F13°C65°F18°C13 mph21 km/h from SWDrizzleDrizzle
May 2953°F12°C66°F19°C7 mph11 km/h from WRainDrizzle
May 3050°F10°C67°F20°C9 mph14 km/h from NMostly ClearClear
May 3148°F9°C71°F22°C5 mph9 km/h from NClearMostly Clear

Yes

Low of 55°F13°C, High of 77°F25°C
Wind: 2 mph3 km/h
Precipitation: None

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