No
you don't need a jacket based on the weather in Belmont, CA, USA 1 second ago
71°F22°C & Clear
Wind is 4 mph6 km/h from the West, gusting to 7 mph12 km/h
| September 16 | ||||
| 12am | 70°F21°C | 3 mph5 km/h West | Clear | |
| 1am | 68°F20°C | 3 mph5 km/h West | Clear | |
| 2am | 66°F19°C | 2 mph4 km/h Southwest | Clear | |
| 3am | 64°F18°C | 3 mph4 km/h South | Clear | |
| 4am | 64°F18°C | 3 mph4 km/h South | Clear | |
| 5am | 63°F17°C | 2 mph3 km/h Southwest | Mostly Clear | |
| 6am | 61°F16°C | 3 mph4 km/h West | Mostly Clear | |
| 7am | 60°F16°C | 2 mph4 km/h Southwest | Mostly Clear | |
| 8am | 59°F15°C | 2 mph3 km/h Southwest | Mostly Clear | |
| 9am | 59°F15°C | 2 mph3 km/h Southwest | Mostly Clear | |
| 10am | 58°F15°C | 2 mph3 km/h Southwest | Mostly Clear | |
| 11am | 61°F16°C | 2 mph3 km/h Southwest | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 15 | 59°F15°C | 88°F31°C | 2 mph4 km/h from Northwest | Mostly Clear | Mostly Clear |
| September 16 | 58°F15°C | 79°F26°C | 5 mph7 km/h from West | Clear | Clear |
| September 17 | 58°F15°C | 79°F26°C | 5 mph8 km/h from Northwest | Mostly Clear | Mostly Cloudy |
| September 18 | 60°F16°C | 73°F23°C | 5 mph8 km/h from West | Mostly Cloudy | Mostly Cloudy |
| September 19 | 61°F16°C | 72°F22°C | 4 mph7 km/h from West | Partly Cloudy | Partly Cloudy |
| September 20 | 59°F15°C | 74°F23°C | 5 mph8 km/h from Northwest | Mostly Clear | Mostly Clear |
| September 21 | 58°F15°C | 74°F23°C | 4 mph7 km/h from West | Clear | Mostly Clear |
Yes
Low of 58°F15°C, High of 79°F26°CWind: 5 mph7 km/h
Precipitation: None