Yes

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

Why? Because you're not freezing, but you’ll definitely start complaining if it lasts much longer!
37°F3°C & Partly Cloudy

Wind is 4 mph7 km/h from the Northwest, gusting to 14 mph22 km/h
November 26
2pm38°F3°C5 mph8 km/h NorthwestMostly Clear
3pm39°F4°C6 mph10 km/h NorthwestPartly Cloudy
4pm39°F4°C7 mph11 km/h NorthwestPartly Cloudy
5pm39°F4°C7 mph12 km/h NorthwestPartly Cloudy
6pm38°F3°C6 mph10 km/h NorthwestPartly Cloudy
7pm36°F2°C6 mph9 km/h NorthwestPartly Cloudy
8pm34°F1°C6 mph9 km/h NorthwestPartly Cloudy
9pm34°F1°C6 mph10 km/h NorthwestPartly Cloudy
10pm33°F0°C6 mph10 km/h NorthwestPartly Cloudy
11pm32°F-0°C6 mph9 km/h NorthwestPartly Cloudy
November 27
12am31°F-0°C6 mph9 km/h NorthwestMostly Cloudy
1am31°F-1°C5 mph9 km/h NorthwestPartly Cloudy
DateLowHighWindDayNight
November 2630°F-1°C39°F4°C6 mph9 km/h from NorthwestPartly CloudyPartly Cloudy
November 2728°F-2°C37°F3°C5 mph9 km/h from WestMostly CloudyMostly Cloudy
November 2826°F-3°C37°F3°C2 mph3 km/h from SouthwestMostly CloudyPartly Cloudy
November 2927°F-3°C38°F3°C4 mph6 km/h from WestMostly CloudyMostly Cloudy
November 3030°F-1°C37°F3°C2 mph3 km/h from EastCloudyCloudy
December 128°F-2°C37°F3°C1 mph2 km/h from SoutheastMostly CloudyPartly Cloudy
December 229°F-2°C41°F5°C2 mph3 km/h from EastMostly CloudyMostly Cloudy

Yes

Low of 28°F-2°C, High of 37°F3°C
Wind: 5 mph9 km/h
Precipitation: None

Support This Page