Yes

you do need a jacket based on the weather in Kelowna, BC, Canada 1 second ago

Why? Because just cool enough for a jacket, but not warm enough to ditch it!
54°F12°C & Cloudy

Wind is 2 mph4 km/h from the Northeast, gusting to 7 mph11 km/h
May 9
2am53°F12°C3 mph4 km/h NortheastCloudy
3am52°F11°C1 mph2 km/h EastMostly Cloudy
4am51°F10°C1 mph1 km/h SoutheastCloudy
5am50°F10°C1 mph1 km/h SoutheastCloudy
6am49°F10°C1 mph1 km/h SoutheastCloudy
7am49°F9°C1 mph1 km/h EastCloudy
8am49°F9°C1 mph2 km/h SoutheastCloudy
9am48°F9°C1 mph2 km/h SoutheastCloudy
10am50°F10°C2 mph2 km/h SouthCloudy
11am53°F12°C2 mph4 km/h WestCloudy
12pm56°F14°C2 mph4 km/h WestCloudy
1pm60°F15°C3 mph4 km/h SouthwestCloudy
DateLowHighWindDayNight
May 848°F9°C66°F19°C4 mph6 km/h from SouthMostly ClearMostly Cloudy
May 948°F9°C72°F22°C4 mph7 km/h from SouthwestCloudyCloudy
May 1049°F9°C66°F19°C4 mph7 km/h from WestCloudyMostly Cloudy
May 1143°F6°C65°F18°C4 mph6 km/h from WestCloudyMostly Cloudy
May 1247°F8°C59°F15°C4 mph7 km/h from WestDrizzleDrizzle
May 1348°F9°C66°F19°C3 mph4 km/h from NorthwestMostly CloudyPartly Cloudy
May 1447°F8°C67°F20°C8 mph13 km/h from WestPartly CloudyMostly Clear

Yes

Low of 48°F9°C, High of 73°F23°C
Wind: 4 mph7 km/h
Precipitation: None

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