Yes
you do need a jacket based on the weather in San Francisco, CA, USA 27 minutes ago
Why? Because it's cool. Pleasantly cool, but cool!
55°F13°C & Cloudy
Wind is 2 mph4 km/h from the East, gusting to 4 mph6 km/h
| December 23 | ||||
| 7am | 55°F13°C | 2 mph4 km/h Northeast | Cloudy | |
| 8am | 55°F13°C | 2 mph4 km/h East | Cloudy | |
| 9am | 54°F12°C | 3 mph5 km/h East | Cloudy | |
| 10am | 54°F12°C | 3 mph5 km/h East | Cloudy | |
| 11am | 55°F13°C | 3 mph5 km/h East | Cloudy | |
| 12pm | 56°F13°C | 3 mph4 km/h East | Mostly Cloudy | |
| 1pm | 57°F14°C | 2 mph3 km/h East | Cloudy | |
| 2pm | 59°F15°C | 2 mph4 km/h East | Cloudy | |
| 3pm | 60°F15°C | 2 mph4 km/h East | Cloudy | |
| 4pm | 61°F16°C | 2 mph4 km/h East | Cloudy | |
| 5pm | 61°F16°C | 2 mph3 km/h Southeast | Cloudy | |
| 6pm | 62°F17°C | 3 mph4 km/h Southwest | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| December 23 | 54°F12°C | 62°F17°C | 3 mph4 km/h from Southeast | Cloudy | Rain |
| December 24 | 48°F9°C | 57°F14°C | 12 mph19 km/h from West | Rain | Mostly Clear |
| December 25 | 45°F7°C | 55°F13°C | 3 mph6 km/h from West | Mostly Cloudy | Drizzle |
| December 26 | 48°F9°C | 58°F15°C | 5 mph9 km/h from South | Drizzle | Rain |
| December 27 | 53°F12°C | 59°F15°C | 6 mph9 km/h from South | Rain | Drizzle |
| December 28 | 53°F12°C | 60°F16°C | 6 mph10 km/h from South | Cloudy | Cloudy |
| December 29 | 48°F9°C | 59°F15°C | 11 mph18 km/h from Southwest | Drizzle | Clear |
Yes
Low of 48°F9°C, High of 56°F14°CWind: 12 mph19 km/h
Precipitation: 81% rain