No
you don't need a jacket based on the weather in San Francisco, CA, USA 1 second ago
59°F15°C & Clear
Wind is 7 mph11 km/h from the West, gusting to 14 mph23 km/h
| October 17 | ||||
| 3am | 58°F15°C | 6 mph10 km/h West | Clear | |
| 4am | 57°F14°C | 5 mph9 km/h West | Clear | |
| 5am | 56°F13°C | 5 mph8 km/h West | Clear | |
| 6am | 55°F13°C | 5 mph8 km/h West | Clear | |
| 7am | 55°F13°C | 4 mph6 km/h Southwest | Mostly Clear | |
| 8am | 54°F12°C | 3 mph5 km/h Southwest | Mostly Clear | |
| 9am | 55°F13°C | 3 mph5 km/h South | Mostly Clear | |
| 10am | 54°F12°C | 3 mph5 km/h South | Partly Cloudy | |
| 11am | 54°F12°C | 3 mph5 km/h South | Partly Cloudy | |
| 12pm | 53°F12°C | 3 mph5 km/h Southeast | Partly Cloudy | |
| 1pm | 53°F12°C | 3 mph4 km/h East | Partly Cloudy | |
| 2pm | 53°F12°C | 3 mph5 km/h East | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| October 16 | 52°F11°C | 66°F19°C | 4 mph7 km/h from West | Mostly Clear | Mostly Clear |
| October 17 | 53°F12°C | 71°F22°C | 4 mph6 km/h from Northwest | Mostly Clear | Clear |
| October 18 | 56°F13°C | 74°F23°C | 4 mph6 km/h from North | Clear | Clear |
| October 19 | 57°F14°C | 70°F21°C | 4 mph7 km/h from West | Mostly Clear | Clear |
| October 20 | 55°F13°C | 74°F23°C | 4 mph7 km/h from North | Clear | Mostly Clear |
| October 21 | 54°F12°C | 71°F21°C | 4 mph7 km/h from West | Partly Cloudy | Partly Cloudy |
| October 22 | 56°F13°C | 66°F19°C | 6 mph10 km/h from Southwest | Partly Cloudy | Partly Cloudy |
Yes
Low of 54°F12°C, High of 72°F22°CWind: 4 mph6 km/h
Precipitation: None