No
you don't need a jacket based on the weather in San Francisco, CA, USA 2 minutes ago
60°F15°C & Mostly Clear
Wind is 11 mph18 km/h from the West, gusting to 18 mph29 km/h
| April 18 | ||||
| 9pm | 59°F15°C | 11 mph18 km/h West | Clear | |
| 10pm | 57°F14°C | 10 mph17 km/h West | Mostly Clear | |
| 11pm | 56°F14°C | 9 mph14 km/h West | Mostly Clear | |
| April 19 | ||||
| 12am | 55°F13°C | 7 mph11 km/h West | Mostly Clear | |
| 1am | 54°F12°C | 7 mph11 km/h West | Mostly Clear | |
| 2am | 53°F12°C | 6 mph10 km/h Southwest | Mostly Clear | |
| 3am | 53°F11°C | 7 mph11 km/h Southwest | Partly Cloudy | |
| 4am | 53°F11°C | 6 mph9 km/h Southwest | Partly Cloudy | |
| 5am | 52°F11°C | 6 mph9 km/h Southwest | Partly Cloudy | |
| 6am | 52°F11°C | 6 mph9 km/h Southwest | Partly Cloudy | |
| 7am | 51°F11°C | 6 mph9 km/h Southwest | Partly Cloudy | |
| 8am | 51°F11°C | 5 mph9 km/h Southwest | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 18 | 51°F10°C | 62°F17°C | 6 mph9 km/h from West | Partly Cloudy | Partly Cloudy |
| April 19 | 51°F11°C | 63°F17°C | 8 mph13 km/h from Southwest | Partly Cloudy | Mostly Cloudy |
| April 20 | 51°F11°C | 65°F18°C | 6 mph10 km/h from Southwest | Mostly Clear | Mostly Clear |
| April 21 | 51°F11°C | 70°F21°C | 5 mph8 km/h from West | Mostly Clear | Mostly Clear |
| April 22 | 52°F11°C | 66°F19°C | 7 mph12 km/h from Southwest | Partly Cloudy | Mostly Clear |
| April 23 | 51°F11°C | 61°F16°C | 11 mph18 km/h from West | Partly Cloudy | Mostly Cloudy |
| April 24 | 50°F10°C | 59°F15°C | 12 mph20 km/h from West | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 51°F11°C, High of 63°F17°CWind: 8 mph13 km/h
Precipitation: None