Yes
you do need a jacket based on the weather in San Mateo, CA, USA 1 second ago
Why? Because it's not very warm out.
57°F14°C & Cloudy
Wind is 11 mph17 km/h from the W, gusting to 22 mph36 km/h
| April 25 | ||||
| 11pm | 56°F14°C | 10 mph17 km/h W | Cloudy | |
| April 26 | ||||
| 12am | 56°F13°C | 10 mph15 km/h W | Cloudy | |
| 1am | 56°F13°C | 9 mph15 km/h W | Cloudy | |
| 2am | 55°F13°C | 9 mph14 km/h W | Cloudy | |
| 3am | 55°F13°C | 9 mph14 km/h W | Cloudy | |
| 4am | 55°F13°C | 9 mph15 km/h W | Cloudy | |
| 5am | 55°F13°C | 9 mph15 km/h W | Cloudy | |
| 6am | 55°F13°C | 10 mph17 km/h W | Cloudy | |
| 7am | 54°F12°C | 11 mph18 km/h NW | Mostly Cloudy | |
| 8am | 54°F12°C | 10 mph17 km/h NW | Mostly Cloudy | |
| 9am | 53°F12°C | 10 mph17 km/h NW | Mostly Cloudy | |
| 10am | 53°F12°C | 11 mph17 km/h NW | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 25 | 51°F11°C | 63°F17°C | 9 mph15 km/h from W | Mostly Cloudy | Cloudy |
| April 26 | 52°F11°C | 61°F16°C | 16 mph26 km/h from W | Windy | Mostly Clear |
| April 27 | 49°F10°C | 62°F17°C | 11 mph18 km/h from W | Mostly Clear | Mostly Clear |
| April 28 | 52°F11°C | 64°F18°C | 12 mph19 km/h from NW | Mostly Clear | Mostly Clear |
| April 29 | 49°F10°C | 66°F19°C | 8 mph12 km/h from NW | Mostly Clear | Clear |
| April 30 | 50°F10°C | 67°F19°C | 9 mph14 km/h from NW | Clear | Clear |
| May 1 | 52°F11°C | 72°F22°C | 9 mph15 km/h from NW | Clear | Mostly Clear |
Yes
Low of 53°F12°C, High of 62°F17°CWind: 16 mph26 km/h
Precipitation: 16% rain