No
you don't need a jacket based on the weather in San Mateo, CA, USA 1 second ago
62°F17°C & Mostly Clear
Wind is 6 mph10 km/h from the Southwest, gusting to 14 mph22 km/h
| August 11 | ||||
| 12am | 61°F16°C | 6 mph9 km/h Southwest | Mostly Clear | |
| 1am | 60°F15°C | 3 mph5 km/h West | Partly Cloudy | |
| 2am | 59°F15°C | 2 mph4 km/h West | Partly Cloudy | |
| 3am | 59°F15°C | 2 mph3 km/h West | Partly Cloudy | |
| 4am | 59°F15°C | 2 mph3 km/h West | Mostly Cloudy | |
| 5am | 60°F15°C | 2 mph3 km/h Southwest | Mostly Cloudy | |
| 6am | 59°F15°C | 2 mph4 km/h Southwest | Haze | |
| 7am | 58°F15°C | 3 mph5 km/h Southwest | Mostly Cloudy | |
| 8am | 58°F14°C | 3 mph5 km/h West | Mostly Cloudy | |
| 9am | 58°F14°C | 3 mph4 km/h West | Mostly Cloudy | |
| 10am | 57°F14°C | 3 mph4 km/h West | Mostly Cloudy | |
| 11am | 58°F15°C | 3 mph4 km/h West | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| August 10 | 57°F14°C | 77°F25°C | 2 mph3 km/h from West | Mostly Clear | Partly Cloudy |
| August 11 | 57°F14°C | 69°F21°C | 6 mph10 km/h from West | Mostly Clear | Partly Cloudy |
| August 12 | 57°F14°C | 69°F21°C | 6 mph10 km/h from West | Partly Cloudy | Mostly Cloudy |
| August 13 | 57°F14°C | 68°F20°C | 7 mph11 km/h from West | Partly Cloudy | Mostly Cloudy |
| August 14 | 57°F14°C | 66°F19°C | 7 mph11 km/h from West | Mostly Cloudy | Mostly Cloudy |
| August 15 | 58°F14°C | 68°F20°C | 8 mph13 km/h from West | Partly Cloudy | Mostly Cloudy |
| August 16 | 59°F15°C | 68°F20°C | 9 mph15 km/h from West | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 57°F14°C, High of 69°F21°CWind: 6 mph10 km/h
Precipitation: None