Yes

you do need a jacket based on the weather in Portland, OR 97220, USA 1 second ago

Why? Because just cool enough for a jacket, but not warm enough to ditch it!
57°F14°C & Cloudy

Wind is 3 mph5 km/h from the West, gusting to 7 mph11 km/h
April 28
4pm58°F15°C3 mph5 km/h WestCloudy
5pm60°F16°C3 mph5 km/h WestMostly Cloudy
6pm62°F17°C3 mph4 km/h WestMostly Cloudy
7pm63°F17°C3 mph5 km/h WestCloudy
8pm63°F17°C4 mph6 km/h NorthwestCloudy
9pm63°F17°C4 mph7 km/h NorthwestCloudy
10pm61°F16°C5 mph9 km/h NorthwestMostly Cloudy
11pm59°F15°C5 mph8 km/h NorthwestCloudy
April 29
12am57°F14°C5 mph8 km/h NorthMostly Cloudy
1am55°F13°C4 mph7 km/h NorthMostly Cloudy
2am54°F12°C3 mph5 km/h NorthwestMostly Cloudy
3am53°F11°C2 mph3 km/h NorthwestMostly Cloudy
DateLowHighWindDayNight
April 2848°F9°C63°F17°C3 mph4 km/h from NorthwestCloudyDrizzle
April 2948°F9°C64°F18°C4 mph6 km/h from SouthwestDrizzleMostly Clear
April 3043°F6°C68°F20°C3 mph5 km/h from NorthMostly ClearClear
May 147°F8°C79°F26°C3 mph5 km/h from NorthwestClearClear
May 251°F11°C69°F21°C5 mph7 km/h from SouthwestDrizzleDrizzle
May 346°F8°C58°F14°C6 mph10 km/h from NorthwestMostly CloudyPartly Cloudy
May 442°F5°C60°F16°C7 mph11 km/h from NorthwestPartly CloudyMostly Clear

Yes

Low of 48°F9°C, High of 64°F18°C
Wind: 4 mph6 km/h
Precipitation: 49% rain

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