No
you don't need a jacket based on the weather in San Ramon, CA, USA 1 second ago
76°F24°C & Mostly Clear
Wind is 4 mph6 km/h from the West, gusting to 6 mph10 km/h
| May 15 | ||||
| 4pm | 76°F25°C | 5 mph8 km/h West | Clear | |
| 5pm | 77°F25°C | 9 mph15 km/h West | Clear | |
| 6pm | 77°F25°C | 11 mph18 km/h West | Clear | |
| 7pm | 76°F24°C | 11 mph18 km/h West | Mostly Clear | |
| 8pm | 74°F23°C | 11 mph17 km/h West | Clear | |
| 9pm | 71°F22°C | 11 mph17 km/h West | Partly Cloudy | |
| 10pm | 67°F19°C | 8 mph13 km/h West | Mostly Cloudy | |
| 11pm | 62°F17°C | 6 mph10 km/h Southwest | Partly Cloudy | |
| May 16 | ||||
| 12am | 59°F15°C | 5 mph9 km/h Southwest | Partly Cloudy | |
| 1am | 57°F14°C | 5 mph8 km/h Southwest | Partly Cloudy | |
| 2am | 54°F12°C | 5 mph8 km/h Southwest | Mostly Cloudy | |
| 3am | 53°F11°C | 4 mph6 km/h Southwest | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| May 15 | 47°F8°C | 77°F25°C | 6 mph10 km/h from West | Mostly Clear | Mostly Cloudy |
| May 16 | 48°F9°C | 76°F25°C | 6 mph10 km/h from West | Mostly Clear | Mostly Cloudy |
| May 17 | 51°F10°C | 68°F20°C | 13 mph20 km/h from West | Partly Cloudy | Mostly Clear |
| May 18 | 47°F8°C | 75°F24°C | 8 mph12 km/h from West | Clear | Clear |
| May 19 | 49°F9°C | 84°F29°C | 9 mph14 km/h from Northwest | Clear | Clear |
| May 20 | 51°F11°C | 82°F28°C | 6 mph10 km/h from Southwest | Clear | Clear |
| May 21 | 48°F9°C | 84°F29°C | 5 mph9 km/h from West | Clear | Clear |
Yes
Low of 48°F9°C, High of 76°F25°CWind: 6 mph10 km/h
Precipitation: None