Yes
you do need a jacket based on the weather in Princeton, NJ 08540, USA 1 second ago
Why? Because it's cool. Pleasantly cool, but cool!
56°F13°C & Clear
Wind is 4 mph7 km/h from the North, gusting to 9 mph14 km/h
| September 12 | ||||
| 6am | 56°F13°C | 5 mph8 km/h North | Clear | |
| 7am | 56°F13°C | 4 mph7 km/h North | Clear | |
| 8am | 60°F16°C | 4 mph7 km/h North | Clear | |
| 9am | 65°F18°C | 6 mph10 km/h Northeast | Clear | |
| 10am | 69°F21°C | 7 mph11 km/h Northeast | Clear | |
| 11am | 73°F23°C | 6 mph10 km/h Northeast | Clear | |
| 12pm | 75°F24°C | 5 mph9 km/h Northeast | Clear | |
| 1pm | 78°F25°C | 4 mph7 km/h Northeast | Mostly Clear | |
| 2pm | 78°F26°C | 4 mph6 km/h Northeast | Mostly Clear | |
| 3pm | 79°F26°C | 4 mph6 km/h Northeast | Partly Cloudy | |
| 4pm | 78°F26°C | 3 mph5 km/h Northeast | Partly Cloudy | |
| 5pm | 77°F25°C | 3 mph5 km/h East | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 12 | 54°F12°C | 79°F26°C | 5 mph8 km/h from Northeast | Mostly Clear | Partly Cloudy |
| September 13 | 59°F15°C | 80°F27°C | 4 mph6 km/h from Southwest | Mostly Clear | Partly Cloudy |
| September 14 | 61°F16°C | 81°F27°C | 3 mph5 km/h from Northwest | Mostly Clear | Mostly Clear |
| September 15 | 61°F16°C | 81°F27°C | 6 mph10 km/h from East | Mostly Clear | Mostly Cloudy |
| September 16 | 62°F17°C | 80°F27°C | 4 mph7 km/h from East | Partly Cloudy | Mostly Clear |
| September 17 | 58°F15°C | 79°F26°C | 4 mph7 km/h from East | Mostly Cloudy | Mostly Cloudy |
| September 18 | 62°F17°C | 77°F25°C | 4 mph7 km/h from East | Mostly Cloudy | Mostly Cloudy |
No
Low of 59°F15°C, High of 80°F27°CWind: 4 mph6 km/h
Precipitation: None