No
you don't need a jacket based on the weather in San Ramon, CA, USA 1 second ago
84°F29°C & Clear
Wind is 10 mph16 km/h from the West, gusting to 16 mph25 km/h
| June 30 | ||||
| 8pm | 83°F28°C | 11 mph17 km/h West | Clear | |
| 9pm | 79°F26°C | 10 mph17 km/h West | Clear | |
| 10pm | 74°F23°C | 10 mph17 km/h West | Clear | |
| 11pm | 68°F20°C | 9 mph14 km/h West | Clear | |
| July 1 | ||||
| 12am | 64°F18°C | 7 mph11 km/h West | Clear | |
| 1am | 61°F16°C | 7 mph11 km/h West | Clear | |
| 2am | 60°F15°C | 5 mph8 km/h West | Clear | |
| 3am | 58°F15°C | 4 mph7 km/h Southwest | Clear | |
| 4am | 57°F14°C | 4 mph6 km/h Southwest | Mostly Clear | |
| 5am | 56°F14°C | 4 mph7 km/h Southwest | Mostly Clear | |
| 6am | 56°F13°C | 4 mph6 km/h Southwest | Mostly Clear | |
| 7am | 55°F13°C | 4 mph6 km/h Southwest | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| June 30 | 58°F14°C | 87°F31°C | 6 mph10 km/h from West | Clear | Mostly Clear |
| July 1 | 54°F12°C | 85°F29°C | 7 mph11 km/h from Southwest | Clear | Mostly Clear |
| July 2 | 54°F12°C | 79°F26°C | 7 mph12 km/h from Southwest | Clear | Clear |
| July 3 | 53°F11°C | 77°F25°C | 8 mph13 km/h from Southwest | Mostly Clear | Partly Cloudy |
| July 4 | 54°F12°C | 73°F23°C | 10 mph16 km/h from Southwest | Mostly Clear | Mostly Clear |
| July 5 | 52°F11°C | 76°F24°C | 7 mph11 km/h from Southwest | Clear | Mostly Clear |
| July 6 | 52°F11°C | 73°F23°C | 8 mph12 km/h from Southwest | Mostly Clear | Partly Cloudy |
Yes
Low of 55°F13°C, High of 84°F29°CWind: 7 mph11 km/h
Precipitation: None