Yes

you do need a jacket based on the weather in San Francisco, CA 94105, USA 1 second ago

Why? Because the air feels like the cozy middle ground between summer and winter!
55°F13°C & Mostly Cloudy

Wind is 7 mph11 km/h from the Southwest, gusting to 12 mph19 km/h
July 2
8am54°F12°C7 mph12 km/h SouthwestCloudy
9am54°F12°C7 mph11 km/h SouthwestHaze
10am55°F13°C6 mph10 km/h SouthwestCloudy
11am56°F13°C6 mph9 km/h SouthwestCloudy
12pm57°F14°C6 mph9 km/h SouthMostly Cloudy
1pm59°F15°C6 mph10 km/h SouthPartly Cloudy
2pm62°F16°C7 mph11 km/h SouthwestPartly Cloudy
3pm64°F18°C8 mph13 km/h SouthwestPartly Cloudy
4pm65°F19°C8 mph14 km/h SouthwestMostly Clear
5pm66°F19°C10 mph16 km/h SouthwestMostly Clear
6pm67°F19°C10 mph16 km/h SouthwestMostly Clear
7pm66°F19°C10 mph16 km/h SouthwestClear
DateLowHighWindDayNight
July 254°F12°C67°F19°C8 mph14 km/h from SouthwestPartly CloudyPartly Cloudy
July 355°F13°C65°F19°C10 mph16 km/h from SouthwestMostly CloudyMostly Clear
July 454°F12°C65°F18°C11 mph18 km/h from WestMostly ClearMostly Clear
July 553°F12°C65°F18°C9 mph14 km/h from SouthwestMostly ClearMostly Clear
July 654°F12°C65°F18°C8 mph13 km/h from SouthwestMostly ClearPartly Cloudy
July 754°F12°C65°F18°C9 mph15 km/h from SouthwestPartly CloudyMostly Cloudy
July 855°F13°C65°F18°C8 mph13 km/h from SouthwestPartly CloudyPartly Cloudy

Yes

Low of 55°F13°C, High of 65°F19°C
Wind: 10 mph16 km/h
Precipitation: None

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