No
you don't need a jacket based on the weather in Seattle, WA, USA 1 second ago
74°F24°C & Clear
Wind is 7 mph11 km/h from the North, gusting to 11 mph17 km/h
| September 17 | ||||
| 7pm | 75°F24°C | 7 mph12 km/h North | Clear | |
| 8pm | 74°F23°C | 7 mph11 km/h North | Clear | |
| 9pm | 71°F22°C | 7 mph12 km/h North | Clear | |
| 10pm | 66°F19°C | 9 mph14 km/h North | Clear | |
| 11pm | 63°F17°C | 9 mph14 km/h North | Mostly Clear | |
| September 18 | ||||
| 12am | 61°F16°C | 8 mph12 km/h North | Clear | |
| 1am | 60°F15°C | 7 mph10 km/h Northeast | Clear | |
| 2am | 60°F15°C | 6 mph10 km/h Northeast | Clear | |
| 3am | 59°F15°C | 5 mph9 km/h Northeast | Mostly Clear | |
| 4am | 58°F15°C | 4 mph7 km/h Northeast | Partly Cloudy | |
| 5am | 57°F14°C | 4 mph6 km/h Northeast | Mostly Cloudy | |
| 6am | 56°F13°C | 3 mph6 km/h Northeast | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 17 | 59°F15°C | 75°F24°C | 4 mph6 km/h from Northwest | Clear | Mostly Clear |
| September 18 | 55°F13°C | 70°F21°C | 7 mph11 km/h from North | Clear | Clear |
| September 19 | 53°F12°C | 72°F22°C | 5 mph7 km/h from North | Clear | Clear |
| September 20 | 54°F12°C | 72°F22°C | 7 mph11 km/h from South | Partly Cloudy | Rain |
| September 21 | 56°F13°C | 68°F20°C | 6 mph10 km/h from Southwest | Drizzle | Partly Cloudy |
| September 22 | 53°F12°C | 69°F21°C | 3 mph5 km/h from Southwest | Partly Cloudy | Mostly Clear |
| September 23 | 55°F13°C | 71°F22°C | 7 mph11 km/h from North | Mostly Clear | Partly Cloudy |
Yes
Low of 55°F13°C, High of 70°F21°CWind: 7 mph11 km/h
Precipitation: None