No
you don't need a jacket based on the weather in Portland, ME, USA 1 second ago
74°F23°C & Cloudy
Wind is 4 mph6 km/h from the SE, gusting to 6 mph10 km/h
| September 18 | ||||
| 12pm | 74°F24°C | 4 mph7 km/h SE | Mostly Cloudy | |
| 1pm | 76°F24°C | 5 mph8 km/h SE | Mostly Cloudy | |
| 2pm | 76°F25°C | 6 mph9 km/h SE | Mostly Cloudy | |
| 3pm | 76°F24°C | 7 mph10 km/h SE | Mostly Cloudy | |
| 4pm | 74°F24°C | 7 mph11 km/h S | Mostly Cloudy | |
| 5pm | 72°F22°C | 6 mph10 km/h S | Mostly Cloudy | |
| 6pm | 70°F21°C | 6 mph10 km/h S | Mostly Cloudy | |
| 7pm | 66°F19°C | 6 mph9 km/h S | Cloudy | |
| 8pm | 65°F18°C | 5 mph8 km/h S | Cloudy | |
| 9pm | 64°F18°C | 4 mph7 km/h SW | Cloudy | |
| 10pm | 63°F17°C | 3 mph5 km/h SW | Cloudy | |
| 11pm | 62°F17°C | 3 mph5 km/h SW | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 18 | 58°F14°C | 76°F25°C | 4 mph7 km/h from SE | Mostly Cloudy | Cloudy |
| September 19 | 58°F14°C | 71°F22°C | 4 mph6 km/h from E | Cloudy | Drizzle |
| September 20 | 59°F15°C | 69°F20°C | 9 mph15 km/h from NE | Drizzle | Drizzle |
| September 21 | 57°F14°C | 66°F19°C | 10 mph16 km/h from NE | Drizzle | Mostly Cloudy |
| September 22 | 54°F12°C | 64°F18°C | 9 mph15 km/h from NE | Partly Cloudy | Partly Cloudy |
| September 23 | 51°F10°C | 64°F18°C | 7 mph11 km/h from E | Partly Cloudy | Partly Cloudy |
| September 24 | 50°F10°C | 64°F18°C | 7 mph11 km/h from SE | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 58°F15°C, High of 72°F22°CWind: 4 mph6 km/h
Precipitation: 30% rain