No
you don't need a jacket based on the weather in Walnut Creek, CA, USA 1 second ago
60°F15°C & Mostly Cloudy
Wind is 2 mph4 km/h from the East, gusting to 4 mph7 km/h
| December 23 | ||||
| 8pm | 59°F15°C | 3 mph4 km/h East | Cloudy | |
| 9pm | 58°F14°C | 2 mph4 km/h Southeast | Mostly Cloudy | |
| 10pm | 56°F14°C | 3 mph4 km/h Southeast | Cloudy | |
| 11pm | 55°F13°C | 3 mph5 km/h South | Cloudy | |
| December 24 | ||||
| 12am | 56°F13°C | 4 mph6 km/h South | Cloudy | |
| 1am | 57°F14°C | 5 mph8 km/h South | Cloudy | |
| 2am | 58°F14°C | 7 mph11 km/h South | Cloudy | |
| 3am | 58°F14°C | 7 mph11 km/h South | Cloudy | |
| 4am | 58°F15°C | 7 mph11 km/h South | Cloudy | |
| 5am | 59°F15°C | 7 mph12 km/h South | Cloudy | |
| 6am | 59°F15°C | 8 mph13 km/h South | Drizzle | |
| 7am | 56°F13°C | 11 mph17 km/h Southwest | Rain | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| December 23 | 53°F12°C | 61°F16°C | 2 mph3 km/h from North | Cloudy | Rain |
| December 24 | 43°F6°C | 59°F15°C | 10 mph16 km/h from West | Rain | Mostly Clear |
| December 25 | 39°F4°C | 55°F13°C | 3 mph5 km/h from Southwest | Mostly Cloudy | Cloudy |
| December 26 | 45°F7°C | 58°F14°C | 6 mph10 km/h from Southwest | Drizzle | Rain |
| December 27 | 50°F10°C | 59°F15°C | 5 mph8 km/h from South | Drizzle | Rain |
| December 28 | 53°F12°C | 61°F16°C | 7 mph11 km/h from Southwest | Drizzle | Mostly Cloudy |
| December 29 | 46°F8°C | 60°F16°C | 11 mph17 km/h from Southwest | Rain | Rain |
Yes
Low of 44°F7°C, High of 59°F15°CWind: 10 mph16 km/h
Precipitation: 80% rain