No
you don't need a jacket based on the weather in San Francisco, CA, USA 1 second ago
66°F19°C & Mostly Cloudy
Wind is 11 mph18 km/h from the West, gusting to 17 mph28 km/h
| August 13 | ||||
| 5pm | 67°F19°C | 12 mph19 km/h West | Partly Cloudy | |
| 6pm | 67°F20°C | 13 mph20 km/h West | Partly Cloudy | |
| 7pm | 66°F19°C | 12 mph20 km/h West | Mostly Cloudy | |
| 8pm | 66°F19°C | 12 mph19 km/h West | Mostly Cloudy | |
| 9pm | 65°F18°C | 11 mph18 km/h West | Mostly Cloudy | |
| 10pm | 63°F17°C | 10 mph16 km/h West | Mostly Cloudy | |
| 11pm | 62°F17°C | 9 mph15 km/h West | Cloudy | |
| August 14 | ||||
| 12am | 61°F16°C | 9 mph14 km/h West | Cloudy | |
| 1am | 61°F16°C | 9 mph14 km/h West | Cloudy | |
| 2am | 60°F15°C | 9 mph14 km/h West | Cloudy | |
| 3am | 59°F15°C | 9 mph14 km/h West | Cloudy | |
| 4am | 58°F15°C | 9 mph14 km/h West | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| August 13 | 58°F15°C | 67°F20°C | 9 mph14 km/h from West | Mostly Cloudy | Cloudy |
| August 14 | 57°F14°C | 66°F19°C | 8 mph12 km/h from Southwest | Partly Cloudy | Mostly Clear |
| August 15 | 57°F14°C | 73°F23°C | 8 mph13 km/h from West | Clear | Partly Cloudy |
| August 16 | 60°F15°C | 72°F22°C | 10 mph16 km/h from West | Partly Cloudy | Mostly Cloudy |
| August 17 | 59°F15°C | 67°F20°C | 10 mph17 km/h from West | Partly Cloudy | Partly Cloudy |
| August 18 | 57°F14°C | 70°F21°C | 8 mph13 km/h from West | Mostly Clear | Mostly Clear |
| August 19 | 58°F15°C | 70°F21°C | 8 mph12 km/h from West | Clear | Mostly Clear |
Yes
Low of 56°F14°C, High of 66°F19°CWind: 8 mph12 km/h
Precipitation: None