Yes
you do need a jacket based on the weather in San Bruno, CA, USA 1 second ago
Why? Because it's not very warm out!
51°F11°C & Mostly Cloudy
Wind is 4 mph6 km/h from the Southwest, gusting to 11 mph17 km/h
| March 20 | ||||
| 4am | 50°F10°C | 4 mph6 km/h West | Partly Cloudy | |
| 5am | 49°F9°C | 3 mph5 km/h West | Mostly Clear | |
| 6am | 48°F9°C | 5 mph7 km/h West | Clear | |
| 7am | 47°F8°C | 4 mph6 km/h West | Mostly Clear | |
| 8am | 46°F8°C | 4 mph7 km/h Northwest | Mostly Clear | |
| 9am | 46°F8°C | 4 mph7 km/h Northwest | Mostly Cloudy | |
| 10am | 46°F8°C | 4 mph6 km/h Northwest | Mostly Cloudy | |
| 11am | 47°F8°C | 3 mph6 km/h Northwest | Mostly Cloudy | |
| 12pm | 49°F9°C | 4 mph6 km/h Northwest | Mostly Cloudy | |
| 1pm | 51°F11°C | 5 mph8 km/h Northwest | Mostly Cloudy | |
| 2pm | 54°F12°C | 5 mph8 km/h Northwest | Partly Cloudy | |
| 3pm | 55°F13°C | 6 mph10 km/h Northwest | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| March 20 | 46°F8°C | 59°F15°C | 7 mph12 km/h from Northwest | Partly Cloudy | Mostly Cloudy |
| March 21 | 47°F9°C | 59°F15°C | 8 mph13 km/h from Northwest | Mostly Cloudy | Mostly Cloudy |
| March 22 | 50°F10°C | 61°F16°C | 8 mph13 km/h from West | Partly Cloudy | Partly Cloudy |
| March 23 | 50°F10°C | 64°F18°C | 5 mph8 km/h from West | Mostly Clear | Mostly Clear |
| March 24 | 50°F10°C | 74°F24°C | 4 mph6 km/h from North | Clear | Mostly Clear |
| March 25 | 53°F12°C | 64°F18°C | 6 mph10 km/h from West | Partly Cloudy | Mostly Cloudy |
| March 26 | 52°F11°C | 63°F17°C | 7 mph12 km/h from Southwest | Mostly Cloudy | Drizzle |
Yes
Low of 47°F9°C, High of 59°F15°CWind: 8 mph13 km/h
Precipitation: None