Yes

you do need a jacket based on the weather in Anacortes, WA 98221, USA 1 second ago

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

Wind is 3 mph5 km/h from the South, gusting to 7 mph11 km/h
September 6
5am57°F14°C3 mph5 km/h SouthMostly Clear
6am56°F13°C2 mph4 km/h SouthMostly Clear
7am55°F13°C4 mph6 km/h SoutheastMostly Clear
8am55°F13°C4 mph6 km/h SoutheastMostly Cloudy
9am55°F13°C3 mph6 km/h SoutheastMostly Cloudy
10am55°F13°C4 mph6 km/h SouthMostly Cloudy
11am56°F14°C4 mph6 km/h SouthMostly Cloudy
12pm59°F15°C5 mph8 km/h SouthMostly Cloudy
1pm61°F16°C5 mph8 km/h SouthMostly Cloudy
2pm63°F17°C5 mph8 km/h SouthwestMostly Cloudy
3pm65°F18°C5 mph8 km/h SouthwestMostly Cloudy
4pm65°F19°C5 mph9 km/h SouthwestMostly Cloudy
DateLowHighWindDayNight
September 654°F12°C67°F20°C5 mph8 km/h from SouthwestMostly CloudyMostly Cloudy
September 757°F14°C66°F19°C6 mph10 km/h from SouthMostly CloudyDrizzle
September 857°F14°C65°F18°C4 mph6 km/h from SouthwestMostly CloudyCloudy
September 956°F13°C65°F18°C5 mph8 km/h from SouthDrizzleDrizzle
September 1056°F13°C64°F18°C5 mph8 km/h from SouthwestMostly CloudyMostly Clear
September 1155°F13°C66°F19°C4 mph7 km/h from SouthwestPartly CloudyMostly Clear
September 1256°F13°C65°F19°C4 mph7 km/h from SouthwestPartly CloudyPartly Cloudy

Yes

Low of 57°F14°C, High of 65°F19°C
Wind: 6 mph10 km/h
Precipitation: 27% rain

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