No
you don't need a jacket based on the weather in San Francisco, CA, USA 1 second ago
64°F18°C & Mostly Cloudy
Wind is 5 mph8 km/h from the West, gusting to 11 mph17 km/h
| September 10 | ||||
| 3am | 63°F17°C | 5 mph8 km/h Southwest | Mostly Cloudy | |
| 4am | 62°F17°C | 4 mph7 km/h West | Mostly Cloudy | |
| 5am | 62°F16°C | 4 mph6 km/h West | Cloudy | |
| 6am | 62°F16°C | 4 mph7 km/h West | Cloudy | |
| 7am | 62°F16°C | 5 mph8 km/h West | Cloudy | |
| 8am | 61°F16°C | 4 mph7 km/h Southwest | Cloudy | |
| 9am | 61°F16°C | 5 mph7 km/h Southwest | Cloudy | |
| 10am | 61°F16°C | 4 mph7 km/h Southwest | Mostly Cloudy | |
| 11am | 62°F17°C | 5 mph7 km/h Southwest | Mostly Cloudy | |
| 12pm | 63°F17°C | 5 mph8 km/h Southwest | Mostly Cloudy | |
| 1pm | 65°F18°C | 6 mph10 km/h Southwest | Mostly Cloudy | |
| 2pm | 66°F19°C | 7 mph11 km/h West | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 9 | 63°F17°C | 72°F22°C | 5 mph8 km/h from Southwest | Cloudy | Mostly Cloudy |
| September 10 | 61°F16°C | 70°F21°C | 8 mph13 km/h from West | Mostly Cloudy | Mostly Cloudy |
| September 11 | 59°F15°C | 70°F21°C | 8 mph12 km/h from West | Mostly Cloudy | Partly Cloudy |
| September 12 | 59°F15°C | 70°F21°C | 8 mph12 km/h from Southwest | Partly Cloudy | Partly Cloudy |
| September 13 | 58°F15°C | 69°F20°C | 10 mph16 km/h from West | Partly Cloudy | Partly Cloudy |
| September 14 | 61°F16°C | 71°F22°C | 9 mph14 km/h from West | Mostly Cloudy | Mostly Clear |
| September 15 | 59°F15°C | 74°F23°C | 5 mph9 km/h from West | Mostly Clear | Mostly Clear |
No
Low of 61°F16°C, High of 70°F21°CWind: 8 mph13 km/h
Precipitation: 18% rain