No
you don't need a jacket based on the weather in Seattle, WA, USA 1 second ago
63°F17°C & Clear
Wind is 4 mph6 km/h from the North, gusting to 11 mph18 km/h
| September 11 | ||||
| 1am | 62°F17°C | 4 mph7 km/h Northeast | Clear | |
| 2am | 60°F16°C | 3 mph5 km/h Northwest | Clear | |
| 3am | 59°F15°C | 2 mph3 km/h North | Clear | |
| 4am | 58°F15°C | 2 mph4 km/h Northeast | Clear | |
| 5am | 58°F14°C | 3 mph4 km/h Northeast | Clear | |
| 6am | 57°F14°C | 2 mph4 km/h Northeast | Clear | |
| 7am | 56°F14°C | 2 mph2 km/h North | Mostly Clear | |
| 8am | 56°F13°C | 2 mph3 km/h East | Mostly Clear | |
| 9am | 56°F13°C | 2 mph4 km/h Southeast | Partly Cloudy | |
| 10am | 56°F13°C | 3 mph4 km/h South | Partly Cloudy | |
| 11am | 58°F14°C | 2 mph3 km/h South | Mostly Cloudy | |
| 12pm | 59°F15°C | 3 mph5 km/h Southwest | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 10 | 56°F13°C | 74°F23°C | 2 mph4 km/h from Northwest | Mostly Clear | Clear |
| September 11 | 56°F13°C | 72°F22°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 | 76°F25°C | 2 mph4 km/h from South | Mostly Clear | Mostly Cloudy |
| September 14 | 58°F14°C | 66°F19°C | 7 mph11 km/h from South | Drizzle | Drizzle |
| September 15 | 55°F13°C | 68°F20°C | 4 mph6 km/h from West | 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 56°F14°C, High of 73°F23°CWind: 3 mph5 km/h
Precipitation: None