No
you don't need a jacket based on the weather in San Jose, CA, USA 16 minutes ago
67°F19°C & Cloudy
Wind is 4 mph6 km/h from the Northwest, gusting to 9 mph15 km/h
| September 19 | ||||
| 1am | 66°F19°C | 1 mph2 km/h West | Cloudy | |
| 2am | 66°F19°C | 2 mph3 km/h Northwest | Cloudy | |
| 3am | 66°F19°C | 1 mph2 km/h Northwest | Cloudy | |
| 4am | 65°F19°C | 1 mph2 km/h Northeast | Cloudy | |
| 5am | 65°F18°C | 2 mph2 km/h Southwest | Cloudy | |
| 6am | 65°F19°C | 2 mph4 km/h Northwest | Cloudy | |
| 7am | 65°F18°C | 2 mph3 km/h Northwest | Cloudy | |
| 8am | 64°F18°C | 2 mph3 km/h Northwest | Cloudy | |
| 9am | 64°F18°C | 2 mph3 km/h West | Mostly Cloudy | |
| 10am | 63°F17°C | 1 mph2 km/h Southwest | Mostly Cloudy | |
| 11am | 64°F18°C | 1 mph2 km/h Southeast | Mostly Cloudy | |
| 12pm | 66°F19°C | 2 mph3 km/h West | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 18 | 65°F19°C | 83°F28°C | 4 mph6 km/h from Southwest | Mostly Cloudy | Cloudy |
| September 19 | 63°F17°C | 82°F28°C | 3 mph5 km/h from Northwest | Mostly Clear | Mostly Clear |
| September 20 | 60°F15°C | 82°F28°C | 5 mph8 km/h from Northwest | Mostly Clear | Clear |
| September 21 | 59°F15°C | 83°F28°C | 5 mph8 km/h from Northwest | Clear | Clear |
| September 22 | 60°F16°C | 89°F32°C | 4 mph7 km/h from Northwest | Clear | Mostly Clear |
| September 23 | 67°F19°C | 87°F30°C | 4 mph6 km/h from Southwest | Partly Cloudy | Mostly Clear |
| September 24 | 64°F18°C | 81°F27°C | 5 mph8 km/h from Northwest | Mostly Clear | Mostly Clear |
No
Low of 64°F18°C, High of 82°F28°CWind: 3 mph5 km/h
Precipitation: None