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.
55°F13°C & Mostly Cloudy
Wind is 6 mph10 km/h from the S, gusting to 14 mph22 km/h
| April 24 | ||||
| 3am | 55°F13°C | 7 mph11 km/h S | Mostly Cloudy | |
| 4am | 54°F12°C | 7 mph11 km/h S | Mostly Cloudy | |
| 5am | 54°F12°C | 7 mph11 km/h S | Cloudy | |
| 6am | 54°F12°C | 6 mph10 km/h S | Cloudy | |
| 7am | 53°F12°C | 5 mph9 km/h S | Cloudy | |
| 8am | 53°F12°C | 5 mph8 km/h S | Cloudy | |
| 9am | 53°F12°C | 5 mph8 km/h S | Cloudy | |
| 10am | 53°F12°C | 5 mph8 km/h S | Cloudy | |
| 11am | 54°F12°C | 5 mph9 km/h SE | Mostly Cloudy | |
| 12pm | 55°F13°C | 5 mph8 km/h S | Mostly Cloudy | |
| 1pm | 57°F14°C | 4 mph7 km/h S | Mostly Cloudy | |
| 2pm | 58°F15°C | 4 mph7 km/h SW | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 23 | 53°F12°C | 61°F16°C | 7 mph12 km/h from SW | Mostly Cloudy | Mostly Cloudy |
| April 24 | 52°F11°C | 61°F16°C | 8 mph12 km/h from SW | Mostly Cloudy | Partly Cloudy |
| April 25 | 51°F11°C | 60°F15°C | 14 mph23 km/h from W | Mostly Cloudy | Mostly Cloudy |
| April 26 | 52°F11°C | 60°F16°C | 16 mph26 km/h from W | Windy | Mostly Clear |
| April 27 | 50°F10°C | 63°F17°C | 11 mph17 km/h from W | Mostly Clear | Mostly Clear |
| April 28 | 51°F11°C | 63°F17°C | 12 mph20 km/h from W | Mostly Clear | Clear |
| April 29 | 50°F10°C | 63°F17°C | 12 mph19 km/h from W | Clear | Clear |
Yes
Low of 53°F12°C, High of 61°F16°CWind: 8 mph12 km/h
Precipitation: None