Yes

you do need a jacket based on the weather in Spokane, WA, USA 1 second ago

Why? Because it's not very warm out.
54°F12°C & Cloudy

Wind is 4 mph7 km/h from the SW, gusting to 10 mph16 km/h
April 26
2pm54°F12°C4 mph7 km/h SWMostly Cloudy
3pm56°F14°C4 mph7 km/h SWMostly Cloudy
4pm58°F15°C4 mph6 km/h SWMostly Cloudy
5pm60°F15°C3 mph5 km/h SWMostly Cloudy
6pm60°F16°C3 mph5 km/h SWMostly Cloudy
7pm61°F16°C3 mph5 km/h SWMostly Cloudy
8pm61°F16°C3 mph5 km/h SWPartly Cloudy
9pm60°F16°C2 mph4 km/h SWPartly Cloudy
10pm59°F15°C3 mph4 km/h SWPartly Cloudy
11pm56°F13°C3 mph4 km/h SEMostly Clear
April 27
12am53°F12°C3 mph4 km/h SPartly Cloudy
1am52°F11°C2 mph4 km/h SPartly Cloudy
DateLowHighWindDayNight
April 2645°F7°C61°F16°C4 mph6 km/h from SWMostly CloudyMostly Cloudy
April 2744°F7°C61°F16°C9 mph14 km/h from SWMostly CloudyMostly Cloudy
April 2842°F6°C59°F15°C12 mph20 km/h from SWCloudyMostly Cloudy
April 2940°F4°C55°F13°C14 mph22 km/h from SWMostly CloudyMostly Clear
April 3035°F2°C56°F13°C9 mph14 km/h from SWMostly CloudyRain
May 136°F2°C57°F14°C5 mph8 km/h from SWPartly CloudyMostly Clear
May 236°F2°C60°F16°C7 mph11 km/h from EMostly CloudyDrizzle

Yes

Low of 44°F7°C, High of 62°F17°C
Wind: 9 mph14 km/h
Precipitation: 25% rain

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