Yes
you do need a jacket based on the weather in San Bruno, CA, USA 1 second ago
Why? Because it's cool. Pleasantly cool, but cool!
55°F13°C & Mostly Cloudy
Wind is 6 mph9 km/h from the South, gusting to 10 mph16 km/h
| June 5 | ||||
| 6am | 55°F13°C | 6 mph9 km/h South | Mostly Cloudy | |
| 7am | 55°F13°C | 5 mph8 km/h South | Mostly Cloudy | |
| 8am | 54°F12°C | 5 mph8 km/h Southwest | Mostly Cloudy | |
| 9am | 55°F13°C | 5 mph8 km/h Southwest | Mostly Cloudy | |
| 10am | 56°F14°C | 4 mph6 km/h South | Partly Cloudy | |
| 11am | 59°F15°C | 4 mph7 km/h South | Partly Cloudy | |
| 12pm | 61°F16°C | 5 mph8 km/h South | Partly Cloudy | |
| 1pm | 63°F17°C | 6 mph10 km/h Southwest | Partly Cloudy | |
| 2pm | 65°F18°C | 8 mph12 km/h Southwest | Partly Cloudy | |
| 3pm | 67°F19°C | 8 mph13 km/h Southwest | Mostly Clear | |
| 4pm | 68°F20°C | 9 mph15 km/h Southwest | Mostly Clear | |
| 5pm | 69°F21°C | 10 mph16 km/h Southwest | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| June 5 | 54°F12°C | 69°F21°C | 8 mph13 km/h from Southwest | Mostly Clear | Partly Cloudy |
| June 6 | 55°F13°C | 69°F20°C | 7 mph11 km/h from West | Mostly Clear | Mostly Clear |
| June 7 | 55°F13°C | 68°F20°C | 8 mph12 km/h from West | Mostly Clear | Partly Cloudy |
| June 8 | 55°F13°C | 66°F19°C | 8 mph13 km/h from West | Partly Cloudy | Mostly Cloudy |
| June 9 | 55°F13°C | 64°F18°C | 9 mph14 km/h from West | Mostly Cloudy | Cloudy |
| June 10 | 56°F13°C | 65°F18°C | 9 mph14 km/h from West | Partly Cloudy | Mostly Cloudy |
| June 11 | 54°F12°C | 64°F18°C | 9 mph15 km/h from West | Partly Cloudy | Mostly Clear |
Yes
Low of 55°F13°C, High of 69°F21°CWind: 7 mph11 km/h
Precipitation: None