No
you don't need a jacket based on the weather in San Francisco, CA 94133, USA 1 second ago
62°F17°C & Mostly Clear
Wind is 4 mph7 km/h from the Southwest, gusting to 7 mph12 km/h
| September 16 | ||||
| 12pm | 62°F17°C | 5 mph8 km/h Southwest | Mostly Clear | |
| 1pm | 65°F18°C | 5 mph8 km/h West | Mostly Clear | |
| 2pm | 67°F20°C | 7 mph11 km/h West | Clear | |
| 3pm | 70°F21°C | 9 mph14 km/h West | Clear | |
| 4pm | 71°F22°C | 11 mph17 km/h West | Clear | |
| 5pm | 72°F22°C | 12 mph19 km/h West | Clear | |
| 6pm | 72°F22°C | 13 mph20 km/h West | Clear | |
| 7pm | 75°F24°C | 9 mph15 km/h West | Clear | |
| 8pm | 73°F23°C | 9 mph14 km/h West | Clear | |
| 9pm | 70°F21°C | 8 mph12 km/h Southwest | Clear | |
| 10pm | 67°F20°C | 7 mph11 km/h Southwest | Mostly Clear | |
| 11pm | 65°F18°C | 6 mph10 km/h Southwest | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 16 | 60°F15°C | 75°F24°C | 8 mph13 km/h from West | Mostly Clear | Partly Cloudy |
| September 17 | 58°F14°C | 76°F25°C | 5 mph9 km/h from Southwest | Mostly Clear | Mostly Cloudy |
| September 18 | 61°F16°C | 67°F19°C | 8 mph13 km/h from Southwest | Mostly Cloudy | Cloudy |
| September 19 | 61°F16°C | 69°F21°C | 6 mph10 km/h from Southwest | Partly Cloudy | Partly Cloudy |
| September 20 | 60°F16°C | 70°F21°C | 7 mph11 km/h from West | Mostly Clear | Partly Cloudy |
| September 21 | 59°F15°C | 72°F22°C | 5 mph8 km/h from Southwest | Mostly Clear | Partly Cloudy |
| September 22 | 59°F15°C | 70°F21°C | 5 mph8 km/h from Southwest | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 57°F14°C, High of 76°F25°CWind: 5 mph9 km/h
Precipitation: None