No
you don't need a jacket based on the weather in Smithtown, NY 11787, USA 1 second ago
67°F19°C & Partly Cloudy
Wind is 7 mph11 km/h from the Southwest, gusting to 18 mph29 km/h
| September 5 | ||||
| 5am | 67°F20°C | 6 mph10 km/h Southwest | Partly Cloudy | |
| 6am | 67°F20°C | 5 mph8 km/h Southwest | Mostly Clear | |
| 7am | 67°F20°C | 5 mph7 km/h Southwest | Mostly Clear | |
| 8am | 70°F21°C | 6 mph9 km/h Southwest | Clear | |
| 9am | 72°F22°C | 7 mph11 km/h Southwest | Mostly Clear | |
| 10am | 75°F24°C | 7 mph12 km/h Southwest | Mostly Clear | |
| 11am | 77°F25°C | 8 mph13 km/h Southwest | Mostly Clear | |
| 12pm | 79°F26°C | 9 mph15 km/h Southwest | Mostly Clear | |
| 1pm | 80°F27°C | 10 mph16 km/h Southwest | Clear | |
| 2pm | 81°F27°C | 11 mph18 km/h South | Clear | |
| 3pm | 81°F27°C | 12 mph19 km/h South | Mostly Clear | |
| 4pm | 80°F27°C | 13 mph21 km/h South | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 5 | 67°F19°C | 81°F27°C | 10 mph16 km/h from Southwest | Mostly Clear | Clear |
| September 6 | 70°F21°C | 82°F28°C | 12 mph19 km/h from South | Thunderstorms | Rain |
| September 7 | 63°F17°C | 71°F21°C | 6 mph10 km/h from Northwest | Rain | Mostly Clear |
| September 8 | 58°F14°C | 73°F23°C | 6 mph9 km/h from Northwest | Clear | Clear |
| September 9 | 58°F15°C | 73°F23°C | 9 mph14 km/h from East | Mostly Clear | Mostly Clear |
| September 10 | 60°F16°C | 72°F22°C | 8 mph14 km/h from Northeast | Cloudy | Mostly Cloudy |
| September 11 | 62°F17°C | 76°F25°C | 9 mph14 km/h from North | Mostly Clear | Mostly Clear |
No
Low of 70°F21°C, High of 82°F28°CWind: 12 mph19 km/h
Precipitation: 43% rain