No
you don't need a jacket based on the weather in San Mateo, CA, USA 1 second ago
64°F18°C & Cloudy
Wind is 4 mph6 km/h from the Southwest, gusting to 11 mph17 km/h
| September 10 | ||||
| 12pm | 65°F19°C | 6 mph10 km/h Southwest | Mostly Cloudy | |
| 1pm | 67°F19°C | 6 mph10 km/h Southwest | Mostly Cloudy | |
| 2pm | 68°F20°C | 8 mph12 km/h Southwest | Mostly Cloudy | |
| 3pm | 69°F21°C | 8 mph13 km/h Southwest | Mostly Cloudy | |
| 4pm | 71°F22°C | 8 mph14 km/h West | Mostly Cloudy | |
| 5pm | 71°F22°C | 10 mph16 km/h Southwest | Partly Cloudy | |
| 6pm | 71°F22°C | 10 mph17 km/h Southwest | Partly Cloudy | |
| 7pm | 70°F21°C | 9 mph15 km/h West | Partly Cloudy | |
| 8pm | 69°F20°C | 9 mph14 km/h West | Partly Cloudy | |
| 9pm | 67°F19°C | 9 mph14 km/h West | Mostly Cloudy | |
| 10pm | 65°F18°C | 8 mph13 km/h West | Mostly Cloudy | |
| 11pm | 64°F18°C | 7 mph12 km/h West | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 10 | 61°F16°C | 71°F22°C | 8 mph12 km/h from Southwest | Partly Cloudy | Cloudy |
| September 11 | 59°F15°C | 68°F20°C | 7 mph11 km/h from West | Mostly Cloudy | Mostly Cloudy |
| September 12 | 59°F15°C | 70°F21°C | 7 mph11 km/h from West | Partly Cloudy | Mostly Cloudy |
| September 13 | 58°F15°C | 68°F20°C | 7 mph12 km/h from West | Partly Cloudy | Mostly Cloudy |
| September 14 | 60°F15°C | 72°F22°C | 6 mph10 km/h from West | Partly Cloudy | Partly Cloudy |
| September 15 | 58°F15°C | 75°F24°C | 5 mph8 km/h from West | Mostly Clear | Mostly Clear |
| September 16 | 58°F14°C | 75°F24°C | 5 mph8 km/h from West | Clear | Mostly Clear |
No
Low of 60°F16°C, High of 68°F20°CWind: 7 mph11 km/h
Precipitation: None