No
you don't need a jacket based on the weather in South San Francisco, CA, USA 1 second ago
60°F15°C & Mostly Clear
Wind is 9 mph15 km/h from the W, gusting to 16 mph25 km/h
| April 19 | ||||
| 9pm | 59°F15°C | 10 mph16 km/h W | Mostly Clear | |
| 10pm | 58°F14°C | 8 mph14 km/h W | Mostly Clear | |
| 11pm | 56°F13°C | 7 mph11 km/h SW | Mostly Clear | |
| April 20 | ||||
| 12am | 55°F13°C | 6 mph10 km/h SW | Mostly Clear | |
| 1am | 54°F12°C | 6 mph9 km/h SW | Partly Cloudy | |
| 2am | 53°F12°C | 6 mph9 km/h SW | Partly Cloudy | |
| 3am | 52°F11°C | 6 mph10 km/h SW | Partly Cloudy | |
| 4am | 52°F11°C | 6 mph10 km/h SW | Mostly Cloudy | |
| 5am | 51°F11°C | 7 mph11 km/h SW | Partly Cloudy | |
| 6am | 51°F11°C | 7 mph11 km/h SW | Mostly Cloudy | |
| 7am | 51°F11°C | 6 mph10 km/h SW | Mostly Cloudy | |
| 8am | 52°F11°C | 6 mph10 km/h SW | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 19 | 48°F9°C | 64°F18°C | 6 mph9 km/h from W | Partly Cloudy | Partly Cloudy |
| April 20 | 51°F11°C | 64°F18°C | 9 mph14 km/h from W | Mostly Clear | Mostly Clear |
| April 21 | 52°F11°C | 66°F19°C | 6 mph10 km/h from W | Clear | Mostly Clear |
| April 22 | 51°F11°C | 67°F20°C | 9 mph14 km/h from SW | Partly Cloudy | Partly Cloudy |
| April 23 | 52°F11°C | 62°F17°C | 11 mph17 km/h from SW | Mostly Cloudy | Mostly Cloudy |
| April 24 | 52°F11°C | 61°F16°C | 9 mph15 km/h from W | Partly Cloudy | Partly Cloudy |
| April 25 | 50°F10°C | 59°F15°C | 11 mph18 km/h from W | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 51°F11°C, High of 64°F18°CWind: 9 mph14 km/h
Precipitation: None