No
you don't need a jacket based on the weather in San Mateo (East San Mateo), California, United States 1 second ago
75°F24°C & Mostly Clear
Wind is 7 mph11 km/h from the Northwest, gusting to 11 mph18 km/h
| September 21 | ||||
| 8pm | 75°F24°C | 7 mph12 km/h Northwest | Clear | |
| 9pm | 72°F22°C | 7 mph12 km/h West | Clear | |
| 10pm | 68°F20°C | 7 mph11 km/h West | Clear | |
| 11pm | 65°F19°C | 5 mph8 km/h West | Clear | |
| September 22 | ||||
| 12am | 64°F18°C | 3 mph6 km/h Southwest | Clear | |
| 1am | 62°F17°C | 4 mph7 km/h South | Clear | |
| 2am | 62°F17°C | 4 mph7 km/h Southwest | Clear | |
| 3am | 61°F16°C | 4 mph7 km/h Southwest | Clear | |
| 4am | 60°F16°C | 4 mph7 km/h Southwest | Clear | |
| 5am | 59°F15°C | 4 mph7 km/h Southwest | Mostly Clear | |
| 6am | 59°F15°C | 4 mph6 km/h Southwest | Mostly Clear | |
| 7am | 59°F15°C | 4 mph6 km/h Southwest | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 21 | 60°F16°C | 76°F24°C | 5 mph8 km/h from Northwest | Mostly Clear | Clear |
| September 22 | 58°F14°C | 76°F24°C | 5 mph8 km/h from West | Clear | Clear |
| September 23 | 58°F15°C | 82°F28°C | 4 mph7 km/h from Northwest | Clear | Partly Cloudy |
| September 24 | 62°F17°C | 75°F24°C | 4 mph7 km/h from West | Mostly Cloudy | Partly Cloudy |
| September 25 | 60°F16°C | 73°F23°C | 5 mph8 km/h from West | Partly Cloudy | Partly Cloudy |
| September 26 | 58°F14°C | 74°F23°C | 5 mph8 km/h from West | Mostly Clear | Clear |
| September 27 | 57°F14°C | 72°F22°C | 5 mph8 km/h from West | Mostly Clear | Mostly Clear |
Yes
Low of 57°F14°C, High of 75°F24°CWind: 5 mph8 km/h
Precipitation: None