Yes
you do need a jacket based on the weather in San Bruno, CA, USA 1 second ago
Why? Because it's pretty chilly!
55°F13°C & Partly Cloudy
Wind is 5 mph8 km/h from the Southwest, gusting to 15 mph24 km/h
| July 20 | ||||
| 3am | 54°F12°C | 5 mph7 km/h West | Partly Cloudy | |
| 4am | 54°F12°C | 5 mph8 km/h Southwest | Partly Cloudy | |
| 5am | 54°F12°C | 4 mph6 km/h Southwest | Partly Cloudy | |
| 6am | 54°F12°C | 4 mph7 km/h Southwest | Mostly Cloudy | |
| 7am | 54°F12°C | 4 mph6 km/h Southwest | Mostly Cloudy | |
| 8am | 55°F13°C | 4 mph7 km/h South | Mostly Cloudy | |
| 9am | 55°F13°C | 6 mph9 km/h Southwest | Cloudy | |
| 10am | 55°F13°C | 6 mph9 km/h Southwest | Cloudy | |
| 11am | 56°F14°C | 7 mph11 km/h Southwest | Mostly Cloudy | |
| 12pm | 58°F14°C | 7 mph12 km/h Southwest | Mostly Cloudy | |
| 1pm | 59°F15°C | 8 mph13 km/h Southwest | Mostly Cloudy | |
| 2pm | 61°F16°C | 8 mph14 km/h Southwest | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| July 19 | 54°F12°C | 66°F19°C | 6 mph9 km/h from West | Mostly Cloudy | Partly Cloudy |
| July 20 | 54°F12°C | 64°F18°C | 10 mph15 km/h from West | Mostly Cloudy | Mostly Cloudy |
| July 21 | 55°F13°C | 64°F18°C | 11 mph17 km/h from West | Mostly Cloudy | Cloudy |
| July 22 | 56°F14°C | 64°F18°C | 9 mph14 km/h from West | Cloudy | Cloudy |
| July 23 | 56°F13°C | 64°F18°C | 8 mph13 km/h from West | Mostly Cloudy | Cloudy |
| July 24 | 56°F14°C | 66°F19°C | 8 mph13 km/h from West | Mostly Cloudy | Mostly Cloudy |
| July 25 | 56°F13°C | 65°F18°C | 8 mph13 km/h from West | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 54°F12°C, High of 64°F18°CWind: 10 mph15 km/h
Precipitation: None