No
you don't need a jacket based on the weather in West Islip, NY, USA 1 second ago
73°F23°C & Clear
Wind is 5 mph8 km/h from the North, gusting to 9 mph15 km/h
| September 19 | ||||
| 9pm | 72°F22°C | 5 mph8 km/h North | Clear | |
| 10pm | 70°F21°C | 6 mph9 km/h North | Clear | |
| 11pm | 68°F20°C | 7 mph11 km/h North | Clear | |
| September 20 | ||||
| 12am | 67°F19°C | 8 mph13 km/h North | Clear | |
| 1am | 65°F18°C | 8 mph13 km/h Northeast | Mostly Clear | |
| 2am | 64°F18°C | 9 mph15 km/h Northeast | Mostly Clear | |
| 3am | 63°F17°C | 10 mph16 km/h Northeast | Mostly Clear | |
| 4am | 62°F17°C | 10 mph16 km/h Northeast | Mostly Clear | |
| 5am | 60°F16°C | 10 mph16 km/h Northeast | Clear | |
| 6am | 60°F15°C | 10 mph16 km/h Northeast | Clear | |
| 7am | 59°F15°C | 10 mph16 km/h Northeast | Clear | |
| 8am | 60°F16°C | 11 mph17 km/h Northeast | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 19 | 62°F17°C | 85°F29°C | 3 mph5 km/h from Northwest | Clear | Mostly Clear |
| September 20 | 59°F15°C | 72°F22°C | 9 mph15 km/h from East | Clear | Mostly Clear |
| September 21 | 57°F14°C | 69°F21°C | 10 mph15 km/h from East | Mostly Cloudy | Mostly Clear |
| September 22 | 56°F13°C | 72°F22°C | 5 mph9 km/h from Southeast | Mostly Clear | Mostly Clear |
| September 23 | 65°F18°C | 78°F25°C | 9 mph14 km/h from Southwest | Partly Cloudy | Rain |
| September 24 | 66°F19°C | 78°F25°C | 5 mph8 km/h from North | Partly Cloudy | Partly Cloudy |
| September 25 | 62°F17°C | 73°F23°C | 9 mph15 km/h from East | Mostly Cloudy | Rain |
No
Low of 59°F15°C, High of 73°F23°CWind: 9 mph15 km/h
Precipitation: None