No
you don't need a jacket based on the weather in San Francisco, CA, USA 7 minutes ago
64°F18°C & Cloudy
Wind is 9 mph14 km/h from the West, gusting to 17 mph27 km/h
| September 18 | ||||
| 9pm | 64°F18°C | 9 mph14 km/h West | Cloudy | |
| 10pm | 62°F17°C | 7 mph11 km/h West | Cloudy | |
| 11pm | 62°F17°C | 7 mph12 km/h Southwest | Cloudy | |
| September 19 | ||||
| 12am | 62°F17°C | 6 mph10 km/h Southwest | Cloudy | |
| 1am | 61°F16°C | 8 mph12 km/h Southwest | Cloudy | |
| 2am | 61°F16°C | 6 mph10 km/h Southwest | Cloudy | |
| 3am | 61°F16°C | 6 mph10 km/h Southwest | Cloudy | |
| 4am | 61°F16°C | 6 mph9 km/h Southwest | Cloudy | |
| 5am | 61°F16°C | 5 mph8 km/h Southwest | Cloudy | |
| 6am | 61°F16°C | 5 mph8 km/h Southwest | Cloudy | |
| 7am | 60°F16°C | 5 mph8 km/h Southwest | Cloudy | |
| 8am | 60°F16°C | 5 mph8 km/h Southwest | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 18 | 60°F16°C | 66°F19°C | 7 mph11 km/h from West | Mostly Cloudy | Cloudy |
| September 19 | 60°F16°C | 72°F22°C | 6 mph9 km/h from Southwest | Partly Cloudy | Partly Cloudy |
| September 20 | 59°F15°C | 72°F22°C | 7 mph11 km/h from West | Mostly Clear | Partly Cloudy |
| September 21 | 59°F15°C | 70°F21°C | 8 mph12 km/h from West | Partly Cloudy | Mostly Clear |
| September 22 | 59°F15°C | 77°F25°C | 5 mph9 km/h from West | Mostly Clear | Mostly Clear |
| September 23 | 61°F16°C | 74°F23°C | 5 mph8 km/h from Southwest | Partly Cloudy | Partly Cloudy |
| September 24 | 60°F16°C | 72°F22°C | 7 mph12 km/h from West | Partly Cloudy | Partly Cloudy |
No
Low of 61°F16°C, High of 72°F22°CWind: 6 mph9 km/h
Precipitation: None