No
you don't need a jacket based on the weather in San Jose, CA, USA 6 seconds ago
63°F17°C & Mostly Clear
Wind is 1 mph1 km/h from the Northwest, gusting to 2 mph3 km/h
| September 17 | ||||
| 9am | 62°F17°C | 1 mph2 km/h Northwest | Mostly Clear | |
| 10am | 61°F16°C | 1 mph2 km/h North | Mostly Clear | |
| 11am | 62°F17°C | 1 mph2 km/h North | Partly Cloudy | |
| 12pm | 65°F19°C | 2 mph3 km/h Northwest | Mostly Clear | |
| 1pm | 70°F21°C | 2 mph4 km/h Northwest | Mostly Clear | |
| 2pm | 75°F24°C | 3 mph5 km/h Northwest | Clear | |
| 3pm | 81°F27°C | 4 mph7 km/h Northwest | Clear | |
| 4pm | 85°F30°C | 5 mph8 km/h Northwest | Clear | |
| 5pm | 88°F31°C | 6 mph10 km/h Northwest | Mostly Clear | |
| 6pm | 90°F32°C | 7 mph12 km/h Northwest | Mostly Clear | |
| 7pm | 90°F32°C | 8 mph13 km/h Northwest | Partly Cloudy | |
| 8pm | 88°F31°C | 8 mph12 km/h Northwest | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 17 | 61°F16°C | 90°F32°C | 5 mph7 km/h from Northwest | Mostly Clear | Mostly Cloudy |
| September 18 | 64°F18°C | 79°F26°C | 3 mph6 km/h from South | Cloudy | Cloudy |
| September 19 | 63°F17°C | 78°F26°C | 3 mph5 km/h from West | Partly Cloudy | Partly Cloudy |
| September 20 | 60°F16°C | 81°F27°C | 4 mph6 km/h from Northwest | Mostly Clear | Clear |
| September 21 | 59°F15°C | 83°F29°C | 4 mph7 km/h from Northwest | Clear | Clear |
| September 22 | 62°F17°C | 91°F33°C | 3 mph5 km/h from Northwest | Mostly Clear | Partly Cloudy |
| September 23 | 65°F19°C | 81°F27°C | 4 mph7 km/h from West | Drizzle | Mostly Clear |
No
Low of 64°F18°C, High of 80°F27°CWind: 3 mph6 km/h
Precipitation: 27% rain