Yes
you do need a jacket based on the weather in San Francisco, CA, USA 1 second ago
Why? Because it's not very warm out.
54°F12°C & Partly Cloudy
Wind is 12 mph19 km/h from the W, gusting to 22 mph36 km/h
| April 26 | ||||
| 8am | 54°F12°C | 12 mph19 km/h W | Mostly Cloudy | |
| 9am | 53°F12°C | 12 mph19 km/h W | Mostly Cloudy | |
| 10am | 53°F12°C | 12 mph19 km/h W | Partly Cloudy | |
| 11am | 54°F12°C | 13 mph20 km/h W | Mostly Cloudy | |
| 12pm | 55°F13°C | 12 mph20 km/h W | Partly Cloudy | |
| 1pm | 57°F14°C | 14 mph22 km/h W | Partly Cloudy | |
| 2pm | 59°F15°C | 16 mph25 km/h W | Windy | |
| 3pm | 60°F15°C | 18 mph28 km/h W | Windy | |
| 4pm | 60°F16°C | 19 mph30 km/h W | Windy | |
| 5pm | 61°F16°C | 20 mph32 km/h W | Windy | |
| 6pm | 60°F16°C | 20 mph32 km/h W | Windy | |
| 7pm | 60°F15°C | 20 mph33 km/h W | Windy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 26 | 52°F11°C | 61°F16°C | 17 mph28 km/h from W | Windy | Mostly Clear |
| April 27 | 50°F10°C | 61°F16°C | 11 mph17 km/h from W | Mostly Clear | Mostly Clear |
| April 28 | 52°F11°C | 64°F18°C | 12 mph19 km/h from W | Clear | Mostly Clear |
| April 29 | 50°F10°C | 64°F18°C | 9 mph14 km/h from W | Clear | Clear |
| April 30 | 50°F10°C | 65°F18°C | 8 mph12 km/h from W | Clear | Clear |
| May 1 | 51°F11°C | 64°F18°C | 8 mph13 km/h from W | Clear | Mostly Clear |
| May 2 | 51°F11°C | 63°F17°C | 12 mph19 km/h from W | Mostly Clear | Partly Cloudy |
Yes
Low of 50°F10°C, High of 62°F17°CWind: 11 mph17 km/h
Precipitation: None