Yes
you do need a jacket based on the weather in San Francisco (Potrero Hill), California, United States 1 second ago
Why? Because it's pretty chilly!
59°F15°C & Mostly Clear
Wind is 2 mph4 km/h from the Southwest, gusting to 10 mph16 km/h
| September 17 | ||||
| 5am | 58°F15°C | 3 mph5 km/h Southwest | Mostly Clear | |
| 6am | 58°F14°C | 3 mph4 km/h Southwest | Mostly Clear | |
| 7am | 57°F14°C | 3 mph4 km/h Southwest | Partly Cloudy | |
| 8am | 57°F14°C | 3 mph5 km/h Southwest | Partly Cloudy | |
| 9am | 56°F14°C | 3 mph5 km/h Southwest | Partly Cloudy | |
| 10am | 56°F13°C | 3 mph5 km/h Southwest | Partly Cloudy | |
| 11am | 58°F14°C | 3 mph4 km/h Southwest | Partly Cloudy | |
| 12pm | 60°F16°C | 2 mph3 km/h Southwest | Partly Cloudy | |
| 1pm | 63°F17°C | 2 mph4 km/h West | Mostly Clear | |
| 2pm | 67°F19°C | 3 mph4 km/h West | Mostly Clear | |
| 3pm | 71°F22°C | 4 mph7 km/h West | Mostly Clear | |
| 4pm | 73°F23°C | 6 mph10 km/h West | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 17 | 56°F13°C | 74°F24°C | 5 mph9 km/h from West | Mostly Clear | Mostly Cloudy |
| September 18 | 60°F16°C | 68°F20°C | 8 mph12 km/h from Southwest | Cloudy | Mostly Cloudy |
| September 19 | 61°F16°C | 72°F22°C | 5 mph8 km/h from West | Partly Cloudy | Partly Cloudy |
| September 20 | 59°F15°C | 73°F23°C | 6 mph9 km/h from West | Mostly Clear | Partly Cloudy |
| September 21 | 58°F15°C | 72°F22°C | 6 mph9 km/h from Southwest | Mostly Clear | Mostly Clear |
| September 22 | 58°F15°C | 78°F25°C | 5 mph8 km/h from West | Mostly Clear | Partly Cloudy |
| September 23 | 59°F15°C | 72°F22°C | 6 mph10 km/h from West | Drizzle | Mostly Cloudy |
No
Low of 61°F16°C, High of 68°F20°CWind: 8 mph12 km/h
Precipitation: 28% rain