Yes

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

Why? Because it's bitterly cold.
46°F8°C & Cloudy

Wind is 4 mph7 km/h from the N, gusting to 9 mph14 km/h
April 25
6am45°F7°C5 mph7 km/h NMostly Cloudy
7am44°F7°C3 mph4 km/h NPartly Cloudy
8am43°F6°C3 mph5 km/h NWMostly Cloudy
9am42°F5°C3 mph5 km/h NMostly Cloudy
10am45°F7°C2 mph3 km/h NMostly Cloudy
11am48°F9°C1 mph2 km/h ECloudy
12pm50°F10°C3 mph4 km/h SCloudy
1pm52°F11°C4 mph7 km/h SCloudy
2pm55°F13°C6 mph9 km/h SCloudy
3pm57°F14°C7 mph11 km/h SCloudy
4pm58°F14°C8 mph13 km/h SCloudy
5pm59°F15°C12 mph19 km/h SCloudy
DateLowHighWindDayNight
April 2542°F5°C60°F15°C8 mph13 km/h from SCloudyMostly Cloudy
April 2642°F5°C64°F18°C4 mph7 km/h from WPartly CloudyPartly Cloudy
April 2742°F6°C65°F18°C6 mph10 km/h from WMostly CloudyPartly Cloudy
April 2840°F4°C63°F17°C7 mph11 km/h from SWMostly CloudyPartly Cloudy
April 2939°F4°C60°F15°C8 mph13 km/h from WPartly CloudyPartly Cloudy
April 3035°F2°C63°F17°C7 mph11 km/h from SWPartly CloudyMostly Cloudy
May 137°F3°C66°F19°C4 mph6 km/h from SEPartly CloudyPartly Cloudy

Yes

Low of 42°F6°C, High of 64°F18°C
Wind: 4 mph7 km/h
Precipitation: 35% rain

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