Yes

you do need a jacket based on the weather in Cupertino, CA, USA 4 minutes ago

Why? Because it's pretty chilly!
53°F11°C & Mostly Cloudy

Wind is 2 mph4 km/h from the Southwest, gusting to 3 mph5 km/h
November 3
2pm53°F11°C2 mph3 km/h SouthwestMostly Cloudy
3pm52°F11°C2 mph3 km/h SouthwestMostly Cloudy
4pm55°F13°C1 mph2 km/h SouthwestPartly Cloudy
5pm59°F15°C2 mph3 km/h NorthMostly Clear
6pm62°F17°C3 mph4 km/h NorthClear
7pm65°F18°C3 mph5 km/h NorthClear
8pm68°F20°C4 mph6 km/h NorthClear
9pm69°F21°C4 mph7 km/h NorthClear
10pm70°F21°C5 mph8 km/h NorthClear
11pm70°F21°C5 mph7 km/h NorthwestClear
November 4
12am68°F20°C4 mph7 km/h NorthwestClear
1am65°F18°C4 mph6 km/h NorthwestClear
DateLowHighWindDayNight
November 352°F11°C70°F21°C3 mph5 km/h from NorthClearMostly Clear
November 451°F10°C72°F22°C4 mph6 km/h from SouthPartly CloudyRain
November 556°F13°C64°F18°C8 mph12 km/h from SouthRainMostly Cloudy
November 652°F11°C67°F19°C3 mph5 km/h from NorthwestPartly CloudyMostly Clear
November 752°F11°C69°F20°C4 mph6 km/h from NorthwestMostly ClearPartly Cloudy
November 854°F12°C70°F21°C2 mph3 km/h from NorthPartly CloudyPartly Cloudy
November 953°F12°C71°F22°C2 mph3 km/h from SouthwestMostly CloudyMostly Cloudy

Yes

Low of 51°F11°C, High of 73°F23°C
Wind: 4 mph6 km/h
Precipitation: None

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