No
you don't need a jacket based on the weather in San Jose (South San Jose), California, United States 1 second ago
63°F17°C & Mostly Clear
Wind is 2 mph3 km/h from the Northeast, gusting to 6 mph9 km/h
| September 11 | ||||
| 12pm | 63°F17°C | 2 mph3 km/h Northeast | Mostly Cloudy | |
| 1pm | 66°F19°C | 2 mph3 km/h North | Partly Cloudy | |
| 2pm | 69°F20°C | 3 mph5 km/h North | Partly Cloudy | |
| 3pm | 72°F22°C | 5 mph8 km/h Northwest | Mostly Clear | |
| 4pm | 74°F23°C | 8 mph13 km/h Northwest | Mostly Clear | |
| 5pm | 74°F23°C | 8 mph13 km/h Northwest | Mostly Clear | |
| 6pm | 74°F23°C | 8 mph13 km/h Northwest | Partly Cloudy | |
| 7pm | 77°F25°C | 8 mph13 km/h Northwest | Mostly Clear | |
| 8pm | 76°F24°C | 8 mph12 km/h Northwest | Mostly Clear | |
| 9pm | 74°F23°C | 8 mph12 km/h Northwest | Mostly Clear | |
| 10pm | 70°F21°C | 7 mph12 km/h Northwest | Clear | |
| 11pm | 67°F20°C | 6 mph9 km/h Northwest | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 11 | 62°F17°C | 77°F25°C | 6 mph9 km/h from Northwest | Partly Cloudy | Mostly Clear |
| September 12 | 58°F15°C | 83°F28°C | 5 mph8 km/h from Northwest | Clear | Mostly Clear |
| September 13 | 57°F14°C | 80°F27°C | 5 mph8 km/h from Northwest | Mostly Clear | Mostly Clear |
| September 14 | 58°F14°C | 81°F27°C | 5 mph9 km/h from Northwest | Mostly Clear | Clear |
| September 15 | 59°F15°C | 90°F32°C | 3 mph5 km/h from Northwest | Clear | Clear |
| September 16 | 66°F19°C | 93°F34°C | 4 mph7 km/h from Northwest | Clear | Clear |
| September 17 | 68°F20°C | 94°F35°C | 4 mph6 km/h from Northwest | Mostly Clear | Mostly Clear |
Yes
Low of 58°F15°C, High of 82°F28°CWind: 5 mph8 km/h
Precipitation: None