No
you don't need a jacket based on the weather in San Francisco, CA, USA 1 second ago
75°F24°C & Clear
Wind is 4 mph7 km/h from the West, gusting to 7 mph11 km/h
| October 19 | ||||
| 12am | 73°F23°C | 7 mph11 km/h West | Clear | |
| 1am | 70°F21°C | 8 mph12 km/h West | Clear | |
| 2am | 67°F19°C | 6 mph10 km/h West | Clear | |
| 3am | 64°F18°C | 4 mph6 km/h West | Clear | |
| 4am | 62°F17°C | 2 mph4 km/h West | Clear | |
| 5am | 61°F16°C | 4 mph6 km/h West | Clear | |
| 6am | 59°F15°C | 4 mph6 km/h Southwest | Clear | |
| 7am | 59°F15°C | 4 mph7 km/h Southwest | Clear | |
| 8am | 58°F15°C | 4 mph7 km/h Southwest | Clear | |
| 9am | 58°F14°C | 4 mph7 km/h Southwest | Mostly Clear | |
| 10am | 57°F14°C | 4 mph7 km/h Southwest | Mostly Clear | |
| 11am | 56°F14°C | 4 mph6 km/h Southwest | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| October 18 | 56°F14°C | 78°F26°C | 4 mph6 km/h from Northwest | Clear | Mostly Clear |
| October 19 | 55°F13°C | 69°F20°C | 6 mph9 km/h from Southwest | Mostly Clear | Clear |
| October 20 | 56°F13°C | 74°F23°C | 5 mph7 km/h from Northeast | Clear | Clear |
| October 21 | 57°F14°C | 73°F23°C | 5 mph8 km/h from West | Clear | Partly Cloudy |
| October 22 | 58°F14°C | 66°F19°C | 9 mph14 km/h from Southwest | Mostly Cloudy | Partly Cloudy |
| October 23 | 56°F13°C | 65°F18°C | 5 mph7 km/h from West | Partly Cloudy | Partly Cloudy |
| October 24 | 55°F13°C | 66°F19°C | 6 mph10 km/h from Southwest | Mostly Cloudy | Cloudy |
Yes
Low of 55°F13°C, High of 69°F21°CWind: 6 mph9 km/h
Precipitation: None