Yes
you do need a jacket based on the weather in San Francisco, CA 94117, USA 1 second ago
Why? Because it's cool. Pleasantly cool, but cool and it's on the windy side!
56°F14°C & Mostly Cloudy
Wind is 12 mph19 km/h from the West, gusting to 23 mph37 km/h
| July 21 | ||||
| 6am | 56°F14°C | 12 mph20 km/h West | Mostly Cloudy | |
| 7am | 56°F13°C | 13 mph21 km/h West | Mostly Cloudy | |
| 8am | 56°F13°C | 13 mph21 km/h West | Mostly Cloudy | |
| 9am | 56°F13°C | 13 mph21 km/h West | Cloudy | |
| 10am | 57°F14°C | 13 mph20 km/h West | Cloudy | |
| 11am | 57°F14°C | 12 mph20 km/h West | Cloudy | |
| 12pm | 58°F15°C | 12 mph20 km/h West | Cloudy | |
| 1pm | 59°F15°C | 11 mph18 km/h West | Cloudy | |
| 2pm | 60°F16°C | 12 mph19 km/h West | Cloudy | |
| 3pm | 61°F16°C | 12 mph19 km/h West | Cloudy | |
| 4pm | 62°F17°C | 13 mph20 km/h West | Cloudy | |
| 5pm | 63°F17°C | 13 mph21 km/h West | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| July 21 | 56°F13°C | 63°F17°C | 13 mph20 km/h from West | Mostly Cloudy | Cloudy |
| July 22 | 56°F13°C | 63°F17°C | 9 mph14 km/h from West | Cloudy | Cloudy |
| July 23 | 56°F14°C | 64°F18°C | 8 mph14 km/h from West | Mostly Cloudy | Mostly Cloudy |
| July 24 | 57°F14°C | 64°F18°C | 9 mph14 km/h from West | Partly Cloudy | Mostly Cloudy |
| July 25 | 56°F14°C | 64°F18°C | 9 mph15 km/h from West | Mostly Cloudy | Mostly Cloudy |
| July 26 | 57°F14°C | 64°F18°C | 10 mph15 km/h from West | Mostly Cloudy | Mostly Cloudy |
| July 27 | 56°F13°C | 65°F18°C | 9 mph15 km/h from West | Partly Cloudy | Partly Cloudy |
Yes
Low of 56°F14°C, High of 63°F17°CWind: 9 mph14 km/h
Precipitation: None