Yes
you do need a jacket based on the weather in San Francisco, CA, USA 1 second ago
Why? Because it's cool. Pleasantly cool, but cool!
56°F13°C & Clear
Wind is 6 mph10 km/h from the Southwest, gusting to 13 mph21 km/h
| August 19 | ||||
| 8am | 56°F13°C | 6 mph10 km/h West | Clear | |
| 9am | 56°F13°C | 6 mph10 km/h West | Mostly Clear | |
| 10am | 56°F13°C | 6 mph10 km/h West | Mostly Clear | |
| 11am | 58°F15°C | 7 mph12 km/h West | Mostly Clear | |
| 12pm | 60°F15°C | 7 mph12 km/h West | Mostly Clear | |
| 1pm | 61°F16°C | 8 mph13 km/h West | Mostly Clear | |
| 2pm | 64°F18°C | 9 mph14 km/h West | Mostly Clear | |
| 3pm | 67°F19°C | 8 mph13 km/h West | Mostly Clear | |
| 4pm | 68°F20°C | 10 mph15 km/h West | Clear | |
| 5pm | 69°F20°C | 11 mph18 km/h West | Clear | |
| 6pm | 68°F20°C | 12 mph20 km/h West | Clear | |
| 7pm | 68°F20°C | 13 mph21 km/h West | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| August 19 | 56°F13°C | 69°F20°C | 10 mph16 km/h from West | Mostly Clear | Mostly Clear |
| August 20 | 58°F14°C | 73°F23°C | 6 mph10 km/h from Southwest | Mostly Clear | Mostly Clear |
| August 21 | 58°F14°C | 72°F22°C | 7 mph11 km/h from Southwest | Partly Cloudy | Mostly Cloudy |
| August 22 | 57°F14°C | 67°F19°C | 7 mph12 km/h from Southwest | Partly Cloudy | Mostly Cloudy |
| August 23 | 57°F14°C | 65°F19°C | 8 mph13 km/h from Southwest | Partly Cloudy | Mostly Cloudy |
| August 24 | 58°F14°C | 66°F19°C | 8 mph13 km/h from Southwest | Partly Cloudy | Mostly Cloudy |
| August 25 | 57°F14°C | 66°F19°C | 8 mph13 km/h from Southwest | Partly Cloudy | Partly Cloudy |
Yes
Low of 58°F15°C, High of 73°F23°CWind: 6 mph10 km/h
Precipitation: None