No
you don't need a jacket based on the weather in San Francisco, CA, USA 1 second ago
60°F16°C & Mostly Clear
Wind is 2 mph3 km/h from the Southwest, gusting to 7 mph12 km/h
| September 20 | ||||
| 5am | 60°F15°C | 3 mph5 km/h Southwest | Mostly Clear | |
| 6am | 59°F15°C | 4 mph6 km/h West | Mostly Clear | |
| 7am | 59°F15°C | 3 mph4 km/h West | Mostly Clear | |
| 8am | 59°F15°C | 3 mph5 km/h West | Partly Cloudy | |
| 9am | 59°F15°C | 4 mph6 km/h West | Partly Cloudy | |
| 10am | 59°F15°C | 3 mph5 km/h West | Partly Cloudy | |
| 11am | 61°F16°C | 4 mph6 km/h West | Mostly Cloudy | |
| 12pm | 63°F17°C | 4 mph7 km/h West | Mostly Cloudy | |
| 1pm | 65°F18°C | 4 mph6 km/h West | Partly Cloudy | |
| 2pm | 68°F20°C | 5 mph8 km/h West | Partly Cloudy | |
| 3pm | 70°F21°C | 6 mph10 km/h West | Mostly Clear | |
| 4pm | 71°F22°C | 8 mph13 km/h West | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 20 | 59°F15°C | 72°F22°C | 7 mph11 km/h from West | Mostly Clear | Partly Cloudy |
| September 21 | 60°F15°C | 70°F21°C | 7 mph12 km/h from Southwest | Mostly Clear | Mostly Clear |
| September 22 | 58°F15°C | 75°F24°C | 6 mph9 km/h from West | Clear | Clear |
| September 23 | 58°F14°C | 80°F26°C | 5 mph8 km/h from West | Mostly Clear | Partly Cloudy |
| September 24 | 60°F16°C | 73°F23°C | 7 mph11 km/h from Southwest | Partly Cloudy | Mostly Cloudy |
| September 25 | 60°F15°C | 69°F21°C | 7 mph12 km/h from Southwest | Partly Cloudy | Partly Cloudy |
| September 26 | 58°F15°C | 71°F22°C | 8 mph12 km/h from Southwest | Partly Cloudy | Cloudy |
No
Low of 60°F16°C, High of 71°F22°CWind: 7 mph12 km/h
Precipitation: None