No
you don't need a jacket based on the weather in San Mateo, CA, USA 1 second ago
62°F17°C & Mostly Cloudy
Wind is 4 mph7 km/h from the Southwest, gusting to 8 mph13 km/h
| September 10 | ||||
| 4am | 62°F17°C | 5 mph8 km/h Southwest | Cloudy | |
| 5am | 62°F17°C | 4 mph7 km/h Southwest | Mostly Cloudy | |
| 6am | 62°F17°C | 4 mph6 km/h Southwest | Cloudy | |
| 7am | 62°F17°C | 3 mph6 km/h Southwest | Cloudy | |
| 8am | 62°F17°C | 3 mph5 km/h Southwest | Cloudy | |
| 9am | 61°F16°C | 3 mph5 km/h Southwest | Cloudy | |
| 10am | 61°F16°C | 3 mph4 km/h South | Drizzle | |
| 11am | 62°F17°C | 3 mph5 km/h Southwest | Cloudy | |
| 12pm | 64°F18°C | 4 mph6 km/h Southwest | Cloudy | |
| 1pm | 66°F19°C | 4 mph7 km/h Southwest | Cloudy | |
| 2pm | 67°F19°C | 5 mph9 km/h West | Mostly Cloudy | |
| 3pm | 68°F20°C | 6 mph10 km/h West | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 10 | 61°F16°C | 70°F21°C | 7 mph11 km/h from West | Drizzle | Mostly Cloudy |
| September 11 | 60°F15°C | 68°F20°C | 7 mph12 km/h from West | Mostly Cloudy | Mostly Cloudy |
| September 12 | 59°F15°C | 70°F21°C | 6 mph10 km/h from West | Partly Cloudy | Mostly Cloudy |
| September 13 | 59°F15°C | 68°F20°C | 7 mph12 km/h from West | Partly Cloudy | Mostly Cloudy |
| September 14 | 60°F15°C | 72°F22°C | 5 mph9 km/h from West | Mostly Cloudy | Partly Cloudy |
| September 15 | 57°F14°C | 75°F24°C | 5 mph9 km/h from West | Clear | Mostly Clear |
| September 16 | 59°F15°C | 76°F24°C | 5 mph7 km/h from West | Clear | Mostly Clear |
No
Low of 60°F16°C, High of 68°F20°CWind: 7 mph12 km/h
Precipitation: 6% rain