No
you don't need a jacket based on the weather in South San Francisco, CA, USA 1 second ago
61°F16°C & Cloudy
Wind is 4 mph7 km/h from the Southwest, gusting to 11 mph18 km/h
| September 6 | ||||
| 11am | 61°F16°C | 6 mph9 km/h West | Cloudy | |
| 12pm | 62°F17°C | 7 mph11 km/h West | Cloudy | |
| 1pm | 64°F18°C | 7 mph12 km/h West | Cloudy | |
| 2pm | 65°F18°C | 8 mph13 km/h West | Cloudy | |
| 3pm | 66°F19°C | 9 mph14 km/h West | Mostly Cloudy | |
| 4pm | 68°F20°C | 9 mph15 km/h West | Partly Cloudy | |
| 5pm | 69°F21°C | 11 mph17 km/h West | Mostly Clear | |
| 6pm | 70°F21°C | 11 mph18 km/h West | Mostly Clear | |
| 7pm | 69°F21°C | 10 mph17 km/h West | Mostly Clear | |
| 8pm | 69°F20°C | 10 mph16 km/h West | Mostly Clear | |
| 9pm | 67°F20°C | 9 mph15 km/h West | Mostly Clear | |
| 10pm | 65°F19°C | 8 mph13 km/h West | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 6 | 61°F16°C | 70°F21°C | 9 mph14 km/h from West | Partly Cloudy | Partly Cloudy |
| September 7 | 60°F16°C | 72°F22°C | 6 mph10 km/h from West | Partly Cloudy | Mostly Cloudy |
| September 8 | 60°F16°C | 73°F23°C | 7 mph11 km/h from West | Mostly Cloudy | Mostly Cloudy |
| September 9 | 61°F16°C | 71°F22°C | 8 mph13 km/h from West | Mostly Cloudy | Mostly Cloudy |
| September 10 | 59°F15°C | 69°F21°C | 8 mph14 km/h from West | Partly Cloudy | Mostly Cloudy |
| September 11 | 59°F15°C | 68°F20°C | 9 mph14 km/h from Southwest | Mostly Cloudy | Mostly Cloudy |
| September 12 | 59°F15°C | 69°F20°C | 7 mph11 km/h from West | Partly Cloudy | Partly Cloudy |
No
Low of 60°F16°C, High of 73°F23°CWind: 6 mph10 km/h
Precipitation: None