Yes
you do need a jacket based on the weather in Walnut Creek, CA, USA 1 second ago
Why? Because the cold's there, but it's just a reminder, not an invasion!
45°F7°C & Clear
Wind is 4 mph6 km/h from the North, gusting to 5 mph8 km/h
| January 9 | ||||
| 6am | 44°F7°C | 5 mph8 km/h North | Clear | |
| 7am | 43°F6°C | 5 mph8 km/h North | Clear | |
| 8am | 42°F6°C | 5 mph8 km/h North | Clear | |
| 9am | 43°F6°C | 4 mph7 km/h Northwest | Clear | |
| 10am | 44°F7°C | 5 mph8 km/h Northwest | Clear | |
| 11am | 45°F7°C | 4 mph6 km/h Northwest | Clear | |
| 12pm | 49°F10°C | 4 mph7 km/h Northeast | Clear | |
| 1pm | 54°F12°C | 5 mph8 km/h Northeast | Clear | |
| 2pm | 57°F14°C | 6 mph10 km/h Northeast | Clear | |
| 3pm | 61°F16°C | 7 mph11 km/h Northeast | Clear | |
| 4pm | 63°F17°C | 7 mph12 km/h Northeast | Clear | |
| 5pm | 65°F18°C | 7 mph11 km/h Northeast | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| January 9 | 42°F6°C | 65°F18°C | 5 mph8 km/h from Northeast | Clear | Clear |
| January 10 | 42°F5°C | 62°F17°C | 3 mph5 km/h from Southwest | Clear | Mostly Clear |
| January 11 | 42°F5°C | 62°F17°C | 8 mph13 km/h from North | Clear | Clear |
| January 12 | 41°F5°C | 59°F15°C | 4 mph6 km/h from Northeast | Clear | Clear |
| January 13 | 40°F5°C | 60°F15°C | 8 mph13 km/h from Northeast | Clear | Clear |
| January 14 | 39°F4°C | 57°F14°C | 6 mph9 km/h from Northeast | Clear | Clear |
| January 15 | 41°F5°C | 61°F16°C | 4 mph7 km/h from Northeast | Clear | Mostly Clear |
Yes
Low of 42°F6°C, High of 63°F17°CWind: 3 mph5 km/h
Precipitation: None