Yes
you do need a jacket based on the weather in San Francisco, CA 94122, USA 1 second ago
Why? Because it's pretty chilly.
56°F13°C & Partly Cloudy
Wind is 6 mph10 km/h from the SW, gusting to 9 mph15 km/h
| September 20 | ||||
| 11am | 56°F13°C | 6 mph10 km/h SW | Mostly Cloudy | |
| 12pm | 57°F14°C | 6 mph10 km/h SW | Mostly Cloudy | |
| 1pm | 58°F15°C | 6 mph10 km/h SW | Mostly Cloudy | |
| 2pm | 60°F16°C | 7 mph11 km/h SW | Mostly Cloudy | |
| 3pm | 62°F17°C | 8 mph13 km/h SW | Mostly Cloudy | |
| 4pm | 63°F17°C | 9 mph15 km/h SW | Mostly Cloudy | |
| 5pm | 63°F17°C | 11 mph18 km/h SW | Partly Cloudy | |
| 6pm | 63°F17°C | 12 mph19 km/h SW | Partly Cloudy | |
| 7pm | 62°F17°C | 12 mph20 km/h SW | Partly Cloudy | |
| 8pm | 61°F16°C | 12 mph19 km/h SW | Partly Cloudy | |
| 9pm | 60°F15°C | 11 mph18 km/h SW | Partly Cloudy | |
| 10pm | 58°F14°C | 10 mph17 km/h SW | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 20 | 54°F12°C | 63°F17°C | 9 mph15 km/h from SW | Mostly Cloudy | Partly Cloudy |
| September 21 | 54°F12°C | 68°F20°C | 7 mph12 km/h from SW | Mostly Clear | Partly Cloudy |
| September 22 | 54°F12°C | 68°F20°C | 6 mph9 km/h from SW | Mostly Clear | Mostly Clear |
| September 23 | 53°F12°C | 74°F23°C | 5 mph7 km/h from W | Mostly Clear | Mostly Clear |
| September 24 | 54°F12°C | 72°F22°C | 5 mph8 km/h from W | Mostly Clear | Partly Cloudy |
| September 25 | 55°F13°C | 66°F19°C | 8 mph13 km/h from W | Mostly Cloudy | Partly Cloudy |
| September 26 | 54°F12°C | 66°F19°C | 8 mph13 km/h from W | Partly Cloudy | Mostly Clear |
Yes
Low of 54°F12°C, High of 68°F20°CWind: 7 mph12 km/h
Precipitation: None