Yes
you do need a jacket based on the weather in Seattle, WA 98188, USA 1 second ago
Why? Because it's not very warm out!
56°F13°C & Partly Cloudy
Wind is 3 mph5 km/h from the North, gusting to 7 mph12 km/h
| September 18 | ||||
| 8am | 55°F13°C | 3 mph5 km/h North | Partly Cloudy | |
| 9am | 55°F13°C | 3 mph5 km/h North | Partly Cloudy | |
| 10am | 54°F12°C | 3 mph6 km/h North | Mostly Clear | |
| 11am | 56°F13°C | 3 mph4 km/h North | Partly Cloudy | |
| 12pm | 59°F15°C | 4 mph6 km/h North | Mostly Cloudy | |
| 1pm | 61°F16°C | 6 mph10 km/h North | Mostly Cloudy | |
| 2pm | 64°F18°C | 7 mph11 km/h North | Mostly Cloudy | |
| 3pm | 66°F19°C | 7 mph11 km/h North | Partly Cloudy | |
| 4pm | 68°F20°C | 8 mph12 km/h North | Mostly Clear | |
| 5pm | 70°F21°C | 8 mph13 km/h North | Clear | |
| 6pm | 71°F22°C | 9 mph14 km/h North | Clear | |
| 7pm | 71°F22°C | 9 mph14 km/h North | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 18 | 54°F12°C | 71°F22°C | 7 mph11 km/h from North | Mostly Clear | Clear |
| September 19 | 53°F12°C | 73°F23°C | 5 mph8 km/h from North | Clear | Mostly Clear |
| September 20 | 53°F12°C | 72°F22°C | 7 mph11 km/h from Southwest | Mostly Clear | Rain |
| September 21 | 56°F13°C | 67°F19°C | 5 mph8 km/h from Southwest | Drizzle | Mostly Clear |
| September 22 | 51°F11°C | 70°F21°C | 2 mph4 km/h from West | Mostly Clear | Clear |
| September 23 | 54°F12°C | 72°F22°C | 7 mph11 km/h from North | Mostly Clear | Partly Cloudy |
| September 24 | 57°F14°C | 73°F23°C | 5 mph8 km/h from Northwest | Partly Cloudy | Mostly Clear |
Yes
Low of 53°F12°C, High of 73°F23°CWind: 5 mph8 km/h
Precipitation: None