No
you don't need a jacket based on the weather in Port Jefferson, NY 11777, USA 1 second ago
73°F23°C & Partly Cloudy
Wind is 8 mph13 km/h from the Southwest, gusting to 17 mph28 km/h
| August 17 | ||||
| 4am | 73°F23°C | 8 mph13 km/h Southwest | Partly Cloudy | |
| 5am | 72°F22°C | 8 mph14 km/h Southwest | Mostly Clear | |
| 6am | 72°F22°C | 8 mph14 km/h Southwest | Mostly Clear | |
| 7am | 73°F23°C | 9 mph14 km/h Southwest | Partly Cloudy | |
| 8am | 75°F24°C | 10 mph16 km/h Southwest | Mostly Clear | |
| 9am | 77°F25°C | 10 mph16 km/h Southwest | Mostly Cloudy | |
| 10am | 79°F26°C | 9 mph14 km/h Southwest | Partly Cloudy | |
| 11am | 82°F28°C | 9 mph14 km/h Southwest | Mostly Clear | |
| 12pm | 83°F29°C | 8 mph14 km/h Southwest | Partly Cloudy | |
| 1pm | 85°F29°C | 8 mph13 km/h Southwest | Partly Cloudy | |
| 2pm | 86°F30°C | 8 mph13 km/h Southwest | Partly Cloudy | |
| 3pm | 86°F30°C | 10 mph16 km/h Southwest | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| August 17 | 72°F22°C | 86°F30°C | 10 mph16 km/h from Southwest | Partly Cloudy | Partly Cloudy |
| August 18 | 66°F19°C | 76°F25°C | 13 mph21 km/h from Northeast | Mostly Cloudy | Mostly Clear |
| August 19 | 63°F17°C | 74°F23°C | 11 mph17 km/h from East | Partly Cloudy | Partly Cloudy |
| August 20 | 66°F19°C | 75°F24°C | 11 mph18 km/h from East | Mostly Cloudy | Mostly Clear |
| August 21 | 66°F19°C | 77°F25°C | 14 mph23 km/h from Northeast | Partly Cloudy | Partly Cloudy |
| August 22 | 66°F19°C | 80°F27°C | 10 mph16 km/h from North | Mostly Clear | Clear |
| August 23 | 68°F20°C | 81°F27°C | 10 mph16 km/h from Southwest | Mostly Clear | Mostly Cloudy |
No
Low of 66°F19°C, High of 76°F25°CWind: 13 mph21 km/h
Precipitation: 14% rain