Yes
you do need a jacket based on the weather in San Jose, CA 95120, USA 1 second ago
Why? Because it's pretty chilly.
55°F13°C & Mostly Clear
Wind is 1 mph2 km/h from the SE, gusting to 3 mph5 km/h
| September 20 | ||||
| 11am | 56°F13°C | 2 mph3 km/h SE | Mostly Cloudy | |
| 12pm | 59°F15°C | 2 mph3 km/h SE | Mostly Clear | |
| 1pm | 63°F17°C | 2 mph4 km/h S | Mostly Clear | |
| 2pm | 68°F20°C | 2 mph4 km/h SW | Clear | |
| 3pm | 72°F22°C | 3 mph5 km/h NW | Clear | |
| 4pm | 76°F24°C | 4 mph6 km/h NW | Clear | |
| 5pm | 78°F26°C | 5 mph8 km/h NW | Clear | |
| 6pm | 79°F26°C | 5 mph9 km/h NW | Clear | |
| 7pm | 79°F26°C | 6 mph9 km/h NW | Clear | |
| 8pm | 77°F25°C | 5 mph9 km/h NW | Clear | |
| 9pm | 74°F23°C | 4 mph7 km/h NW | Clear | |
| 10pm | 69°F20°C | 2 mph4 km/h W | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 20 | 54°F12°C | 79°F26°C | 4 mph6 km/h from NW | Mostly Clear | Mostly Clear |
| September 21 | 54°F12°C | 82°F28°C | 3 mph4 km/h from SW | Clear | Clear |
| September 22 | 55°F13°C | 84°F29°C | 3 mph4 km/h from NW | Clear | Clear |
| September 23 | 59°F15°C | 90°F32°C | 3 mph4 km/h from NW | Mostly Clear | Mostly Clear |
| September 24 | 63°F17°C | 90°F32°C | 3 mph4 km/h from W | Clear | Mostly Clear |
| September 25 | 57°F14°C | 80°F27°C | 3 mph4 km/h from W | Clear | Clear |
| September 26 | 55°F13°C | 79°F26°C | 3 mph5 km/h from NW | Mostly Clear | Mostly Clear |
Yes
Low of 54°F12°C, High of 82°F28°CWind: 3 mph4 km/h
Precipitation: None