Yes
you do need a jacket based on the weather in San Francisco, CA, USA 1 second ago
Why? Because it's cool. Pleasantly cool, but cool!
56°F14°C & Cloudy
Wind is 7 mph11 km/h from the Southwest, gusting to 14 mph22 km/h
| July 15 | ||||
| 4am | 56°F13°C | 8 mph13 km/h Southwest | Cloudy | |
| 5am | 56°F13°C | 8 mph14 km/h Southwest | Cloudy | |
| 6am | 56°F13°C | 8 mph13 km/h Southwest | Cloudy | |
| 7am | 55°F13°C | 7 mph12 km/h Southwest | Cloudy | |
| 8am | 55°F13°C | 8 mph13 km/h Southwest | Cloudy | |
| 9am | 55°F13°C | 8 mph13 km/h Southwest | Cloudy | |
| 10am | 55°F13°C | 8 mph12 km/h Southwest | Cloudy | |
| 11am | 56°F13°C | 8 mph13 km/h Southwest | Cloudy | |
| 12pm | 57°F14°C | 8 mph13 km/h Southwest | Mostly Cloudy | |
| 1pm | 59°F15°C | 9 mph14 km/h Southwest | Mostly Cloudy | |
| 2pm | 61°F16°C | 10 mph16 km/h Southwest | Mostly Cloudy | |
| 3pm | 62°F17°C | 10 mph17 km/h Southwest | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| July 15 | 55°F13°C | 65°F18°C | 11 mph17 km/h from Southwest | Mostly Cloudy | Mostly Cloudy |
| July 16 | 56°F13°C | 64°F18°C | 10 mph16 km/h from Southwest | Partly Cloudy | Mostly Cloudy |
| July 17 | 57°F14°C | 67°F19°C | 8 mph13 km/h from Southwest | Partly Cloudy | Mostly Cloudy |
| July 18 | 57°F14°C | 65°F18°C | 8 mph13 km/h from West | Partly Cloudy | Mostly Cloudy |
| July 19 | 56°F13°C | 64°F18°C | 9 mph14 km/h from West | Partly Cloudy | Partly Cloudy |
| July 20 | 55°F13°C | 66°F19°C | 10 mph16 km/h from Southwest | Mostly Clear | Partly Cloudy |
| July 21 | 56°F13°C | 65°F18°C | 11 mph18 km/h from West | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 55°F13°C, High of 64°F18°CWind: 10 mph16 km/h
Precipitation: None