Yes
you do need a jacket based on the weather in St Helens, OR, USA 1 second ago
Why? Because just cool enough for a jacket, but not warm enough to ditch it!
51°F10°C & Cloudy
Wind is 6 mph10 km/h from the Northwest, gusting to 14 mph22 km/h
| April 12 | ||||
| 3pm | 52°F11°C | 6 mph10 km/h Northwest | Mostly Cloudy | |
| 4pm | 53°F12°C | 6 mph9 km/h Northwest | Mostly Cloudy | |
| 5pm | 54°F12°C | 7 mph12 km/h Northwest | Mostly Cloudy | |
| 6pm | 54°F12°C | 8 mph13 km/h Northwest | Mostly Cloudy | |
| 7pm | 55°F13°C | 8 mph14 km/h Northwest | Partly Cloudy | |
| 8pm | 55°F13°C | 10 mph15 km/h Northwest | Partly Cloudy | |
| 9pm | 53°F12°C | 9 mph15 km/h Northwest | Mostly Clear | |
| 10pm | 51°F11°C | 8 mph13 km/h Northwest | Mostly Clear | |
| 11pm | 48°F9°C | 7 mph12 km/h Northwest | Clear | |
| April 13 | ||||
| 12am | 46°F8°C | 7 mph12 km/h Northwest | Clear | |
| 1am | 44°F7°C | 7 mph11 km/h Northwest | Mostly Clear | |
| 2am | 43°F6°C | 6 mph10 km/h Northwest | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 12 | 37°F3°C | 55°F13°C | 6 mph10 km/h from Northwest | Mostly Cloudy | Mostly Clear |
| April 13 | 37°F3°C | 66°F19°C | 6 mph9 km/h from North | Mostly Clear | Mostly Clear |
| April 14 | 43°F6°C | 74°F23°C | 6 mph9 km/h from Northeast | Mostly Clear | Mostly Clear |
| April 15 | 49°F9°C | 68°F20°C | 10 mph16 km/h from Northwest | Partly Cloudy | Mostly Clear |
| April 16 | 46°F8°C | 67°F19°C | 6 mph10 km/h from Northwest | Mostly Clear | Clear |
| April 17 | 47°F8°C | 68°F20°C | 5 mph9 km/h from North | Clear | Clear |
| April 18 | 43°F6°C | 70°F21°C | 3 mph5 km/h from North | Mostly Clear | Mostly Clear |
Yes
Low of 37°F3°C, High of 65°F19°CWind: 6 mph9 km/h
Precipitation: None