Yes

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

Why? Because it's pretty chilly!
56°F13°C & Mostly Cloudy

Wind is 4 mph6 km/h from the Southwest, gusting to 9 mph14 km/h
November 4
7am56°F13°C3 mph5 km/h SouthMostly Cloudy
8am56°F13°C5 mph7 km/h SoutheastCloudy
9am56°F13°C5 mph8 km/h SoutheastCloudy
10am55°F13°C4 mph7 km/h SouthMostly Cloudy
11am55°F13°C4 mph6 km/h SouthMostly Cloudy
12pm55°F13°C4 mph6 km/h SoutheastMostly Cloudy
1pm55°F13°C4 mph6 km/h SoutheastMostly Cloudy
2pm55°F13°C4 mph6 km/h SoutheastMostly Cloudy
3pm55°F13°C4 mph7 km/h SoutheastMostly Cloudy
4pm57°F14°C4 mph7 km/h SoutheastMostly Cloudy
5pm59°F15°C4 mph7 km/h SouthMostly Cloudy
6pm61°F16°C4 mph7 km/h SouthMostly Cloudy
DateLowHighWindDayNight
November 353°F12°C61°F16°C6 mph9 km/h from WestMostly ClearMostly Cloudy
November 455°F13°C66°F19°C7 mph11 km/h from SouthMostly CloudyRain
November 557°F14°C65°F18°C14 mph23 km/h from SouthRainMostly Cloudy
November 655°F13°C66°F19°C4 mph6 km/h from WestPartly CloudyMostly Cloudy
November 755°F13°C64°F18°C4 mph6 km/h from SouthwestMostly CloudyPartly Cloudy
November 855°F13°C69°F20°C4 mph6 km/h from NorthPartly CloudyPartly Cloudy
November 954°F12°C69°F20°C4 mph6 km/h from NorthMostly CloudyCloudy

Yes

Low of 55°F13°C, High of 66°F19°C
Wind: 7 mph11 km/h
Precipitation: None

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