Yes

you do need a jacket based on the weather in San Jose (West San Jose), California, United States 1 second ago

Why? Because it's not very warm out!
51°F10°C & Clear

Wind is 2 mph4 km/h from the West, gusting to 3 mph5 km/h
November 1
2pm51°F10°C3 mph5 km/h WestClear
3pm51°F10°C3 mph5 km/h WestClear
4pm56°F13°C1 mph2 km/h WestClear
5pm61°F16°C2 mph3 km/h NorthClear
6pm65°F18°C2 mph4 km/h NorthClear
7pm69°F20°C3 mph5 km/h NorthClear
8pm72°F22°C5 mph7 km/h NorthClear
9pm71°F22°C5 mph9 km/h NorthClear
10pm73°F23°C6 mph9 km/h NorthClear
11pm73°F23°C6 mph9 km/h NorthClear
November 2
12am72°F22°C5 mph9 km/h NorthwestClear
1am67°F20°C4 mph6 km/h NorthwestClear
DateLowHighWindDayNight
November 150°F10°C73°F23°C4 mph6 km/h from NorthwestClearMostly Clear
November 252°F11°C75°F24°C3 mph5 km/h from NorthwestClearMostly Clear
November 352°F11°C71°F22°C3 mph5 km/h from NorthwestMostly ClearMostly Clear
November 451°F11°C74°F23°C3 mph5 km/h from SouthPartly CloudyRain
November 554°F12°C66°F19°C7 mph11 km/h from SouthRainPartly Cloudy
November 650°F10°C67°F20°C3 mph5 km/h from NorthwestMostly ClearMostly Clear
November 752°F11°C69°F20°C4 mph6 km/h from NorthwestMostly ClearMostly Clear

Yes

Low of 52°F11°C, High of 75°F24°C
Wind: 3 mph5 km/h
Precipitation: None

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