No
you don't need a jacket based on the weather in Seattle, WA, USA 1 second ago
65°F18°C & Clear
Wind is 4 mph6 km/h from the North, gusting to 10 mph16 km/h
| September 19 | ||||
| 11pm | 63°F17°C | 4 mph6 km/h North | Clear | |
| September 20 | ||||
| 12am | 62°F16°C | 2 mph3 km/h North | Clear | |
| 1am | 60°F16°C | 1 mph2 km/h North | Clear | |
| 2am | 59°F15°C | 2 mph3 km/h North | Clear | |
| 3am | 58°F14°C | 2 mph4 km/h Northeast | Clear | |
| 4am | 57°F14°C | 2 mph3 km/h Northeast | Clear | |
| 5am | 56°F13°C | 2 mph3 km/h East | Clear | |
| 6am | 55°F13°C | 2 mph3 km/h Southeast | Mostly Clear | |
| 7am | 55°F13°C | 2 mph3 km/h Southeast | Mostly Clear | |
| 8am | 55°F13°C | 2 mph4 km/h Southeast | Mostly Clear | |
| 9am | 54°F12°C | 3 mph4 km/h Southeast | Mostly Clear | |
| 10am | 53°F12°C | 3 mph5 km/h South | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 19 | 51°F11°C | 72°F22°C | 3 mph5 km/h from Northwest | Clear | Mostly Clear |
| September 20 | 53°F12°C | 73°F23°C | 6 mph10 km/h from South | Mostly Clear | Rain |
| September 21 | 56°F13°C | 66°F19°C | 6 mph9 km/h from Southeast | Drizzle | Partly Cloudy |
| September 22 | 53°F11°C | 68°F20°C | 2 mph4 km/h from West | Mostly Clear | Clear |
| September 23 | 52°F11°C | 70°F21°C | 6 mph9 km/h from North | Mostly Clear | Clear |
| September 24 | 55°F13°C | 71°F22°C | 3 mph6 km/h from North | Mostly Clear | Mostly Clear |
| September 25 | 54°F12°C | 68°F20°C | 4 mph6 km/h from Southwest | Partly Cloudy | Mostly Clear |
Yes
Low of 54°F12°C, High of 73°F23°CWind: 6 mph10 km/h
Precipitation: None