Yes

you do need a jacket based on the weather in Manhattan, New York, NY, USA 18 minutes ago

Why? Because it's cool. Pleasantly cool, but cool!
56°F13°C & Partly Cloudy

Wind is 2 mph4 km/h from the South, gusting to 11 mph18 km/h
October 11
12am56°F13°C3 mph5 km/h SouthPartly Cloudy
1am54°F12°C3 mph4 km/h WestMostly Clear
2am53°F12°C2 mph3 km/h NorthMostly Clear
3am52°F11°C3 mph5 km/h NorthPartly Cloudy
4am52°F11°C3 mph5 km/h NorthMostly Cloudy
5am54°F12°C3 mph4 km/h NortheastMostly Cloudy
6am54°F12°C3 mph5 km/h NortheastCloudy
7am54°F12°C4 mph6 km/h NortheastMostly Cloudy
8am55°F13°C4 mph6 km/h NortheastMostly Cloudy
9am58°F14°C4 mph7 km/h NortheastMostly Cloudy
10am61°F16°C4 mph7 km/h EastCloudy
11am64°F18°C5 mph9 km/h EastMostly Cloudy
DateLowHighWindDayNight
October 1044°F7°C62°F17°C5 mph7 km/h from SoutheastPartly CloudyMostly Cloudy
October 1152°F11°C68°F20°C7 mph11 km/h from EastCloudyDrizzle
October 1258°F14°C65°F18°C14 mph23 km/h from NortheastDrizzleRain
October 1355°F13°C59°F15°C15 mph24 km/h from NortheastRainDrizzle
October 1453°F12°C65°F18°C11 mph17 km/h from NorthDrizzleMostly Clear
October 1553°F12°C66°F19°C9 mph15 km/h from NorthwestMostly ClearPartly Cloudy
October 1647°F8°C56°F13°C11 mph18 km/h from NorthwestPartly CloudyMostly Clear

Yes

Low of 52°F11°C, High of 68°F20°C
Wind: 7 mph11 km/h
Precipitation: 21% rain

Support This Page