Yes

you do need a jacket based on the weather in Manteca, CA, USA 1 second ago

Why? Because it's not very warm out!
51°F11°C & Partly Cloudy

Wind is 3 mph5 km/h from the Northwest, gusting to 7 mph12 km/h
November 6
3pm51°F11°C3 mph5 km/h NorthwestPartly Cloudy
4pm54°F12°C3 mph4 km/h NorthwestMostly Cloudy
5pm59°F15°C4 mph7 km/h NorthwestPartly Cloudy
6pm64°F18°C6 mph9 km/h NorthwestMostly Clear
7pm67°F19°C6 mph9 km/h NorthwestMostly Clear
8pm69°F21°C6 mph10 km/h NorthwestMostly Clear
9pm71°F21°C8 mph12 km/h NorthwestClear
10pm71°F22°C9 mph14 km/h NorthwestClear
11pm71°F22°C9 mph15 km/h NorthwestClear
November 7
12am69°F21°C9 mph15 km/h NorthwestClear
1am66°F19°C8 mph12 km/h NorthwestClear
2am63°F17°C7 mph11 km/h NorthwestClear
DateLowHighWindDayNight
November 651°F10°C71°F22°C7 mph11 km/h from NorthwestMostly ClearMostly Clear
November 753°F12°C73°F23°C9 mph14 km/h from NorthwestMostly ClearMostly Clear
November 851°F11°C71°F22°C3 mph4 km/h from NorthwestPartly CloudyMostly Clear
November 951°F10°C73°F23°C2 mph3 km/h from NorthPartly CloudyPartly Cloudy
November 1050°F10°C73°F23°C2 mph4 km/h from NorthwestPartly CloudyMostly Cloudy
November 1151°F11°C72°F22°C2 mph3 km/h from EastPartly CloudyMostly Cloudy
November 1253°F12°C68°F20°C4 mph7 km/h from SoutheastRainRain

Yes

Low of 53°F12°C, High of 73°F23°C
Wind: 9 mph14 km/h
Precipitation: 37% clear

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