Yes

you do need a jacket based on the weather in Seattle, WA 98109, USA 1 second ago

Why? Because the cold's there, but it's just a reminder, not an invasion and the wind could blow a wig clean off your head!
48°F9°C & Mostly Cloudy

Wind is 9 mph14 km/h from the South, gusting to 19 mph31 km/h
October 25
8am48°F9°C9 mph14 km/h SouthMostly Cloudy
9am48°F9°C6 mph9 km/h SouthMostly Cloudy
10am47°F8°C5 mph8 km/h SoutheastMostly Cloudy
11am47°F8°C4 mph7 km/h SoutheastMostly Cloudy
12pm47°F8°C5 mph9 km/h EastPartly Cloudy
1pm46°F8°C6 mph10 km/h EastMostly Cloudy
2pm46°F8°C6 mph10 km/h EastCloudy
3pm47°F8°C7 mph11 km/h EastCloudy
4pm47°F9°C6 mph9 km/h SoutheastRain
5pm48°F9°C6 mph10 km/h SoutheastRain
6pm49°F9°C12 mph20 km/h SoutheastDrizzle
7pm51°F10°C11 mph18 km/h SouthDrizzle
DateLowHighWindDayNight
October 2546°F8°C54°F12°C11 mph19 km/h from SouthRainDrizzle
October 2644°F7°C49°F9°C7 mph11 km/h from SouthRainPartly Cloudy
October 2743°F6°C54°F12°C6 mph10 km/h from SouthMostly CloudyCloudy
October 2842°F6°C53°F12°C4 mph6 km/h from SoutheastRainRain
October 2948°F9°C56°F13°C11 mph17 km/h from SouthwestDrizzleMostly Cloudy
October 3047°F8°C56°F13°C2 mph4 km/h from SouthMostly CloudyCloudy
October 3148°F9°C57°F14°C10 mph16 km/h from SouthRainRain

Yes

Low of 44°F7°C, High of 49°F10°C
Wind: 7 mph11 km/h
Precipitation: 86% rain

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