No
you don't need a jacket based on the weather in Walnut Creek, CA, USA 1 second ago
66°F19°C & Partly Cloudy
Wind is 9 mph14 km/h from the Southwest, gusting to 13 mph21 km/h
| July 16 | ||||
| 2pm | 66°F19°C | 9 mph14 km/h Southwest | Mostly Clear | |
| 3pm | 69°F21°C | 9 mph15 km/h Southwest | Mostly Clear | |
| 4pm | 71°F22°C | 10 mph17 km/h Southwest | Clear | |
| 5pm | 72°F22°C | 12 mph19 km/h Southwest | Clear | |
| 6pm | 71°F22°C | 13 mph21 km/h Southwest | Clear | |
| 7pm | 71°F22°C | 13 mph21 km/h Southwest | Clear | |
| 8pm | 70°F21°C | 13 mph21 km/h Southwest | Clear | |
| 9pm | 67°F20°C | 12 mph19 km/h Southwest | Mostly Clear | |
| 10pm | 64°F18°C | 11 mph18 km/h Southwest | Mostly Clear | |
| 11pm | 61°F16°C | 11 mph17 km/h Southwest | Mostly Clear | |
| July 17 | ||||
| 12am | 59°F15°C | 10 mph16 km/h Southwest | Partly Cloudy | |
| 1am | 58°F14°C | 9 mph15 km/h Southwest | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| July 16 | 57°F14°C | 72°F22°C | 10 mph16 km/h from Southwest | Mostly Clear | Partly Cloudy |
| July 17 | 55°F13°C | 74°F23°C | 8 mph13 km/h from Southwest | Mostly Clear | Partly Cloudy |
| July 18 | 54°F12°C | 74°F23°C | 8 mph14 km/h from Southwest | Mostly Clear | Partly Cloudy |
| July 19 | 54°F12°C | 75°F24°C | 8 mph13 km/h from Southwest | Mostly Clear | Mostly Clear |
| July 20 | 54°F12°C | 80°F27°C | 8 mph12 km/h from Southwest | Clear | Partly Cloudy |
| July 21 | 57°F14°C | 71°F21°C | 11 mph18 km/h from Southwest | Mostly Clear | Partly Cloudy |
| July 22 | 55°F13°C | 70°F21°C | 9 mph15 km/h from Southwest | Partly Cloudy | Partly Cloudy |
Yes
Low of 55°F13°C, High of 74°F24°CWind: 8 mph13 km/h
Precipitation: None