Yes
you do need a jacket based on the weather in Arlington, Washington, United States 1 second ago
Why? Because just cool enough for a jacket, but not warm enough to ditch it!
55°F13°C & Clear
Wind is 2 mph3 km/h from the South, gusting to 3 mph5 km/h
| September 16 | ||||
| 4am | 55°F13°C | 2 mph2 km/h Northeast | Clear | |
| 5am | 54°F12°C | 2 mph3 km/h East | Clear | |
| 6am | 53°F12°C | 2 mph3 km/h Southeast | Clear | |
| 7am | 53°F12°C | 2 mph4 km/h Southeast | Clear | |
| 8am | 53°F11°C | 2 mph4 km/h East | Clear | |
| 9am | 52°F11°C | 2 mph4 km/h East | Clear | |
| 10am | 53°F11°C | 3 mph5 km/h Northeast | Clear | |
| 11am | 56°F13°C | 3 mph5 km/h Northeast | Clear | |
| 12pm | 63°F17°C | 3 mph4 km/h East | Clear | |
| 1pm | 70°F21°C | 2 mph3 km/h East | Clear | |
| 2pm | 75°F24°C | 2 mph3 km/h East | Clear | |
| 3pm | 79°F26°C | 3 mph5 km/h Southeast | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 16 | 52°F11°C | 86°F30°C | 3 mph6 km/h from Southeast | Clear | Clear |
| September 17 | 55°F13°C | 75°F24°C | 4 mph7 km/h from West | Mostly Clear | Partly Cloudy |
| September 18 | 52°F11°C | 71°F22°C | 4 mph7 km/h from Northwest | Partly Cloudy | Mostly Clear |
| September 19 | 50°F10°C | 73°F23°C | 3 mph5 km/h from West | Clear | Mostly Clear |
| September 20 | 52°F11°C | 69°F21°C | 5 mph8 km/h from South | Drizzle | Drizzle |
| September 21 | 56°F13°C | 67°F19°C | 3 mph5 km/h from Northwest | Drizzle | Mostly Cloudy |
| September 22 | 52°F11°C | 69°F21°C | 3 mph5 km/h from Southeast | Drizzle | Mostly Cloudy |
Yes
Low of 55°F13°C, High of 75°F24°CWind: 4 mph7 km/h
Precipitation: None