Yes
you do need a jacket based on the weather in San Francisco, CA 94158, USA 1 second ago
Why? Because it's cool. Pleasantly cool, but cool!
56°F13°C & Mostly Cloudy
Wind is 9 mph14 km/h from the Southwest, gusting to 17 mph27 km/h
| July 16 | ||||
| 6am | 56°F13°C | 9 mph15 km/h Southwest | Cloudy | |
| 7am | 55°F13°C | 9 mph15 km/h Southwest | Mostly Cloudy | |
| 8am | 55°F13°C | 9 mph15 km/h Southwest | Mostly Cloudy | |
| 9am | 55°F13°C | 9 mph14 km/h Southwest | Cloudy | |
| 10am | 56°F13°C | 9 mph14 km/h Southwest | Cloudy | |
| 11am | 56°F14°C | 9 mph15 km/h Southwest | Cloudy | |
| 12pm | 58°F14°C | 9 mph15 km/h Southwest | Cloudy | |
| 1pm | 59°F15°C | 9 mph14 km/h Southwest | Mostly Cloudy | |
| 2pm | 60°F16°C | 9 mph14 km/h Southwest | Mostly Cloudy | |
| 3pm | 62°F16°C | 10 mph16 km/h Southwest | Partly Cloudy | |
| 4pm | 63°F17°C | 11 mph17 km/h Southwest | Partly Cloudy | |
| 5pm | 63°F17°C | 12 mph19 km/h Southwest | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| July 16 | 55°F13°C | 64°F18°C | 10 mph17 km/h from Southwest | Mostly Cloudy | Mostly Cloudy |
| July 17 | 57°F14°C | 66°F19°C | 8 mph13 km/h from West | Partly Cloudy | Mostly Cloudy |
| July 18 | 56°F13°C | 64°F18°C | 9 mph14 km/h from West | Partly Cloudy | Mostly Cloudy |
| July 19 | 55°F13°C | 63°F17°C | 9 mph14 km/h from West | Partly Cloudy | Mostly Cloudy |
| July 20 | 55°F13°C | 64°F18°C | 9 mph15 km/h from Southwest | Partly Cloudy | Mostly Cloudy |
| July 21 | 56°F14°C | 62°F17°C | 12 mph20 km/h from Southwest | Mostly Cloudy | Mostly Cloudy |
| July 22 | 56°F13°C | 63°F17°C | 11 mph17 km/h from West | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 57°F14°C, High of 65°F19°CWind: 8 mph13 km/h
Precipitation: None