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 & Windy
Wind is 17 mph28 km/h from the W, gusting to 33 mph53 km/h
| April 26 | ||||
| 10pm | 57°F14°C | 18 mph29 km/h W | Windy | |
| 11pm | 55°F13°C | 17 mph27 km/h NW | Windy | |
| April 27 | ||||
| 12am | 54°F12°C | 15 mph25 km/h NW | Windy | |
| 1am | 54°F12°C | 13 mph21 km/h NW | Mostly Clear | |
| 2am | 53°F12°C | 11 mph18 km/h NW | Mostly Clear | |
| 3am | 53°F12°C | 11 mph17 km/h NW | Mostly Clear | |
| 4am | 52°F11°C | 9 mph15 km/h NW | Mostly Clear | |
| 5am | 52°F11°C | 8 mph13 km/h NW | Mostly Clear | |
| 6am | 51°F11°C | 8 mph13 km/h NW | Mostly Clear | |
| 7am | 51°F10°C | 7 mph11 km/h NW | Mostly Clear | |
| 8am | 50°F10°C | 7 mph11 km/h NW | Mostly Clear | |
| 9am | 50°F10°C | 6 mph10 km/h NW | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 26 | 53°F12°C | 63°F17°C | 11 mph18 km/h from W | Partly Cloudy | Mostly Clear |
| April 27 | 50°F10°C | 62°F17°C | 11 mph17 km/h from W | Mostly Clear | Mostly Clear |
| April 28 | 52°F11°C | 64°F18°C | 13 mph21 km/h from W | Mostly Clear | Mostly Clear |
| April 29 | 49°F9°C | 64°F18°C | 12 mph20 km/h from NW | Mostly Clear | Clear |
| April 30 | 49°F9°C | 64°F18°C | 9 mph15 km/h from NW | Clear | Clear |
| May 1 | 49°F10°C | 67°F19°C | 8 mph13 km/h from NW | Clear | Partly Cloudy |
| May 2 | 49°F10°C | 68°F20°C | 8 mph12 km/h from W | Clear | Mostly Clear |
Yes
Low of 50°F10°C, High of 63°F17°CWind: 11 mph17 km/h
Precipitation: None