Yes

you do need a jacket based on the weather in Sedro-Woolley, WA 98284, USA 1 second ago

Why? Because just cool enough for a jacket, but not warm enough to ditch it!
59°F15°C & Clear

Wind is 4 mph7 km/h from the West, gusting to 7 mph11 km/h
August 2
5am58°F14°C5 mph7 km/h WestClear
6am57°F14°C4 mph7 km/h WestClear
7am56°F14°C5 mph7 km/h WestClear
8am56°F13°C5 mph8 km/h NorthwestClear
9am56°F13°C5 mph7 km/h WestClear
10am58°F14°C4 mph6 km/h WestMostly Clear
11am60°F16°C3 mph5 km/h SouthwestPartly Cloudy
12pm62°F17°C4 mph7 km/h WestPartly Cloudy
1pm64°F18°C5 mph8 km/h WestPartly Cloudy
2pm66°F19°C6 mph9 km/h WestPartly Cloudy
3pm68°F20°C6 mph10 km/h WestMostly Clear
4pm70°F21°C6 mph10 km/h WestMostly Clear
DateLowHighWindDayNight
August 256°F13°C74°F23°C5 mph9 km/h from WestMostly ClearMostly Clear
August 352°F11°C70°F21°C4 mph7 km/h from WestMostly CloudyPartly Cloudy
August 453°F11°C71°F22°C4 mph7 km/h from SouthwestMostly CloudyMostly Cloudy
August 554°F12°C72°F22°C4 mph6 km/h from SouthMostly CloudyMostly Cloudy
August 656°F14°C73°F23°C4 mph6 km/h from SouthwestCloudyDrizzle
August 757°F14°C71°F22°C4 mph6 km/h from WestMostly CloudyMostly Clear
August 854°F12°C76°F24°C4 mph6 km/h from WestMostly ClearMostly Clear

Yes

Low of 52°F11°C, High of 71°F22°C
Wind: 4 mph7 km/h
Precipitation: None

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