No

you don't need a jacket based on the weather in Denville, NJ, USA 5 seconds ago

71°F22°C & Clear

Wind is 6 mph10 km/h from the North, gusting to 11 mph18 km/h
September 11
11am71°F22°C6 mph10 km/h NorthMostly Cloudy
12pm74°F23°C6 mph10 km/h NorthMostly Cloudy
1pm76°F24°C6 mph10 km/h NorthMostly Cloudy
2pm77°F25°C6 mph10 km/h NorthMostly Cloudy
3pm77°F25°C6 mph9 km/h NorthMostly Cloudy
4pm77°F25°C5 mph8 km/h NorthMostly Cloudy
5pm77°F25°C5 mph8 km/h NorthPartly Cloudy
6pm75°F24°C4 mph7 km/h NorthClear
7pm71°F22°C3 mph5 km/h NorthMostly Clear
8pm68°F20°C3 mph5 km/h NorthMostly Clear
9pm65°F18°C3 mph5 km/h NorthMostly Clear
10pm63°F17°C3 mph5 km/h NorthMostly Clear
DateLowHighWindDayNight
September 1155°F13°C77°F25°C5 mph7 km/h from NorthPartly CloudyMostly Clear
September 1258°F15°C75°F24°C4 mph6 km/h from NortheastPartly CloudyPartly Cloudy
September 1358°F14°C78°F25°C4 mph6 km/h from SouthwestPartly CloudyMostly Clear
September 1459°F15°C80°F26°C4 mph7 km/h from NorthwestMostly ClearMostly Clear
September 1560°F16°C79°F26°C3 mph6 km/h from EastMostly ClearPartly Cloudy
September 1660°F15°C79°F26°C3 mph5 km/h from EastPartly CloudyPartly Cloudy
September 1760°F15°C77°F25°C4 mph7 km/h from SoutheastPartly CloudyMostly Cloudy

Yes

Low of 58°F15°C, High of 75°F24°C
Wind: 4 mph6 km/h
Precipitation: None

Support This Page