No
you don't need a jacket based on the weather in Union City, CA, USA 1 second ago
70°F21°C & Clear
Wind is 9 mph15 km/h from the West, gusting to 14 mph22 km/h
| May 4 | ||||
| 6pm | 70°F21°C | 10 mph16 km/h West | Clear | |
| 7pm | 70°F21°C | 10 mph16 km/h West | Clear | |
| 8pm | 69°F21°C | 10 mph16 km/h West | Clear | |
| 9pm | 68°F20°C | 9 mph14 km/h West | Clear | |
| 10pm | 66°F19°C | 6 mph10 km/h West | Clear | |
| 11pm | 62°F17°C | 3 mph5 km/h West | Clear | |
| May 5 | ||||
| 12am | 60°F16°C | 3 mph4 km/h Southwest | Clear | |
| 1am | 58°F15°C | 3 mph5 km/h Southwest | Clear | |
| 2am | 57°F14°C | 3 mph5 km/h West | Clear | |
| 3am | 55°F13°C | 2 mph4 km/h Northwest | Clear | |
| 4am | 54°F12°C | 2 mph4 km/h North | Clear | |
| 5am | 53°F12°C | 2 mph3 km/h North | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| May 4 | 47°F9°C | 70°F21°C | 6 mph10 km/h from West | Clear | Clear |
| May 5 | 52°F11°C | 82°F28°C | 9 mph14 km/h from North | Clear | Clear |
| May 6 | 53°F12°C | 78°F25°C | 6 mph10 km/h from West | Clear | Mostly Clear |
| May 7 | 52°F11°C | 72°F22°C | 7 mph12 km/h from West | Mostly Clear | Partly Cloudy |
| May 8 | 51°F11°C | 73°F23°C | 5 mph8 km/h from West | Mostly Cloudy | Partly Cloudy |
| May 9 | 50°F10°C | 80°F27°C | 5 mph7 km/h from West | Clear | Mostly Clear |
| May 10 | 51°F11°C | 75°F24°C | 5 mph8 km/h from West | Partly Cloudy | Mostly Clear |
Yes
Low of 52°F11°C, High of 82°F28°CWind: 9 mph14 km/h
Precipitation: None