No
you don't need a jacket based on the weather in Seattle, WA 98109, USA 1 second ago
70°F21°C & Clear
Wind is 6 mph10 km/h from the Northwest, gusting to 9 mph15 km/h
| September 10 | ||||
| 6pm | 70°F21°C | 7 mph11 km/h Northwest | Clear | |
| 7pm | 71°F22°C | 7 mph11 km/h Northwest | Clear | |
| 8pm | 71°F22°C | 7 mph11 km/h North | Clear | |
| 9pm | 70°F21°C | 6 mph10 km/h North | Clear | |
| 10pm | 67°F20°C | 5 mph8 km/h North | Clear | |
| 11pm | 64°F18°C | 4 mph7 km/h North | Clear | |
| September 11 | ||||
| 12am | 62°F17°C | 4 mph7 km/h North | Clear | |
| 1am | 62°F17°C | 3 mph5 km/h North | Clear | |
| 2am | 61°F16°C | 3 mph5 km/h North | Clear | |
| 3am | 60°F15°C | 3 mph4 km/h North | Clear | |
| 4am | 59°F15°C | 2 mph3 km/h North | Clear | |
| 5am | 58°F14°C | 2 mph3 km/h North | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 10 | 55°F13°C | 71°F22°C | 4 mph7 km/h from Northwest | Mostly Clear | Mostly Clear |
| September 11 | 56°F13°C | 73°F23°C | 3 mph5 km/h from Southwest | Partly Cloudy | Partly Cloudy |
| September 12 | 57°F14°C | 71°F22°C | 3 mph4 km/h from Southwest | Partly Cloudy | Partly Cloudy |
| September 13 | 57°F14°C | 75°F24°C | 3 mph4 km/h from Southwest | Partly Cloudy | Drizzle |
| September 14 | 57°F14°C | 67°F19°C | 6 mph9 km/h from South | Drizzle | Mostly Cloudy |
| September 15 | 54°F12°C | 69°F20°C | 3 mph5 km/h from North | Partly Cloudy | Mostly Clear |
| September 16 | 54°F12°C | 72°F22°C | 4 mph7 km/h from North | Partly Cloudy | Partly Cloudy |
Yes
Low of 55°F13°C, High of 73°F23°CWind: 3 mph5 km/h
Precipitation: None