No
you don't need a jacket based on the weather in Union City, CA, USA 4 minutes ago
73°F23°C & Clear
Wind is 11 mph17 km/h from the Northwest, gusting to 16 mph26 km/h
| September 3 | ||||
| 9pm | 71°F21°C | 11 mph17 km/h Northwest | Clear | |
| 10pm | 66°F19°C | 10 mph16 km/h Northwest | Clear | |
| 11pm | 63°F17°C | 9 mph14 km/h Northwest | Mostly Clear | |
| September 4 | ||||
| 12am | 62°F17°C | 7 mph11 km/h Northwest | Mostly Clear | |
| 1am | 61°F16°C | 6 mph10 km/h Northwest | Partly Cloudy | |
| 2am | 60°F16°C | 5 mph7 km/h Northwest | Partly Cloudy | |
| 3am | 60°F15°C | 4 mph6 km/h Northwest | Partly Cloudy | |
| 4am | 59°F15°C | 3 mph6 km/h West | Mostly Cloudy | |
| 5am | 59°F15°C | 3 mph5 km/h West | Mostly Cloudy | |
| 6am | 58°F15°C | 3 mph5 km/h West | Mostly Cloudy | |
| 7am | 58°F15°C | 3 mph5 km/h West | Mostly Cloudy | |
| 8am | 58°F14°C | 3 mph6 km/h West | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 3 | 59°F15°C | 80°F27°C | 5 mph9 km/h from West | Mostly Clear | Partly Cloudy |
| September 4 | 57°F14°C | 74°F23°C | 7 mph11 km/h from West | Partly Cloudy | Mostly Cloudy |
| September 5 | 60°F15°C | 72°F22°C | 8 mph12 km/h from West | Partly Cloudy | Mostly Cloudy |
| September 6 | 59°F15°C | 76°F24°C | 7 mph11 km/h from West | Mostly Clear | Partly Cloudy |
| September 7 | 62°F17°C | 77°F25°C | 6 mph10 km/h from West | Partly Cloudy | Mostly Cloudy |
| September 8 | 63°F17°C | 75°F24°C | 7 mph11 km/h from West | Mostly Cloudy | Mostly Cloudy |
| September 9 | 62°F17°C | 72°F22°C | 8 mph13 km/h from West | Mostly Cloudy | Partly Cloudy |
Yes
Low of 57°F14°C, High of 73°F23°CWind: 7 mph11 km/h
Precipitation: None