Yes
you do need a jacket based on the weather in San Jose, CA, USA 1 second ago
Why? Because just cool enough for a jacket, but not warm enough to ditch it!
54°F12°C & Clear
Wind is 2 mph3 km/h from the Northwest, gusting to 4 mph6 km/h
| May 9 | ||||
| 9am | 54°F12°C | 2 mph3 km/h Northwest | Clear | |
| 10am | 56°F13°C | 1 mph2 km/h Southwest | Clear | |
| 11am | 60°F16°C | 1 mph2 km/h Northwest | Clear | |
| 12pm | 65°F18°C | 1 mph2 km/h Northwest | Clear | |
| 1pm | 70°F21°C | 3 mph4 km/h Northwest | Clear | |
| 2pm | 75°F24°C | 3 mph5 km/h Northwest | Clear | |
| 3pm | 80°F27°C | 5 mph7 km/h Northwest | Clear | |
| 4pm | 84°F29°C | 6 mph9 km/h Northwest | Clear | |
| 5pm | 86°F30°C | 7 mph11 km/h Northwest | Clear | |
| 6pm | 87°F30°C | 8 mph13 km/h Northwest | Clear | |
| 7pm | 87°F30°C | 9 mph14 km/h Northwest | Clear | |
| 8pm | 86°F30°C | 9 mph14 km/h Northwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| May 9 | 54°F12°C | 87°F30°C | 5 mph8 km/h from Northwest | Clear | Clear |
| May 10 | 58°F14°C | 84°F29°C | 6 mph9 km/h from Northwest | Clear | Mostly Clear |
| May 11 | 52°F11°C | 72°F22°C | 7 mph11 km/h from Northwest | Clear | Mostly Clear |
| May 12 | 50°F10°C | 63°F17°C | 6 mph10 km/h from West | Drizzle | Partly Cloudy |
| May 13 | 51°F11°C | 68°F20°C | 6 mph10 km/h from Northwest | Partly Cloudy | Clear |
| May 14 | 50°F10°C | 76°F24°C | 6 mph9 km/h from Northwest | Clear | Mostly Clear |
| May 15 | 52°F11°C | 79°F26°C | 5 mph8 km/h from Northwest | Mostly Clear | Partly Cloudy |
Yes
Low of 57°F14°C, High of 84°F29°CWind: 6 mph9 km/h
Precipitation: None