Yes

you do need a jacket based on the weather in Alum Rock (Alum Rock), California, United States 1 second ago

Why? Because it's cool. Pleasantly cool, but cool!
55°F13°C & Mostly Clear

Wind is 1 mph2 km/h from the East, gusting to 2 mph3 km/h
November 6
11am55°F13°C2 mph3 km/h NortheastMostly Clear
12pm54°F12°C1 mph2 km/h EastMostly Clear
1pm53°F12°C2 mph3 km/h NorthMostly Clear
2pm53°F12°C2 mph4 km/h NorthPartly Cloudy
3pm53°F11°C1 mph2 km/h EastPartly Cloudy
4pm55°F13°C1 mph1 km/h NorthMostly Clear
5pm59°F15°C2 mph3 km/h WestPartly Cloudy
6pm62°F17°C3 mph4 km/h WestMostly Clear
7pm65°F18°C4 mph6 km/h WestMostly Clear
8pm66°F19°C5 mph9 km/h NorthwestMostly Clear
9pm68°F20°C6 mph10 km/h NorthwestClear
10pm68°F20°C7 mph11 km/h NorthwestClear
DateLowHighWindDayNight
November 652°F11°C68°F20°C4 mph7 km/h from NorthwestMostly ClearPartly Cloudy
November 753°F12°C71°F22°C5 mph8 km/h from NorthwestMostly ClearMostly Clear
November 852°F11°C75°F24°C3 mph5 km/h from NorthwestMostly ClearClear
November 954°F12°C80°F26°C3 mph4 km/h from NorthwestMostly ClearPartly Cloudy
November 1058°F14°C79°F26°C3 mph4 km/h from NorthwestMostly CloudyMostly Cloudy
November 1158°F14°C78°F26°C2 mph3 km/h from WestPartly CloudyMostly Cloudy
November 1258°F14°C70°F21°C5 mph8 km/h from SouthPartly CloudyRain

Yes

Low of 54°F12°C, High of 72°F22°C
Wind: 5 mph8 km/h
Precipitation: 37% clear

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