No
you don't need a jacket based on the weather in Altadena, CA, USA 1 second ago
66°F19°C & Mostly Cloudy
Wind is 4 mph6 km/h from the Northeast, gusting to 6 mph10 km/h
| October 22 | ||||
| 4am | 65°F18°C | 4 mph7 km/h Northeast | Mostly Cloudy | |
| 5am | 63°F17°C | 2 mph4 km/h South | Mostly Cloudy | |
| 6am | 61°F16°C | 3 mph5 km/h Southeast | Mostly Clear | |
| 7am | 59°F15°C | 2 mph3 km/h East | Mostly Cloudy | |
| 8am | 59°F15°C | 2 mph4 km/h East | Partly Cloudy | |
| 9am | 58°F15°C | 2 mph3 km/h Southeast | Partly Cloudy | |
| 10am | 58°F14°C | 3 mph5 km/h Southeast | Mostly Cloudy | |
| 11am | 58°F15°C | 3 mph4 km/h Southeast | Partly Cloudy | |
| 12pm | 57°F14°C | 3 mph5 km/h Southeast | Partly Cloudy | |
| 1pm | 57°F14°C | 3 mph4 km/h Southeast | Partly Cloudy | |
| 2pm | 56°F13°C | 3 mph4 km/h Southeast | Partly Cloudy | |
| 3pm | 57°F14°C | 3 mph4 km/h Southeast | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| October 21 | 59°F15°C | 82°F28°C | 2 mph3 km/h from South | Mostly Clear | Partly Cloudy |
| October 22 | 56°F13°C | 69°F21°C | 5 mph8 km/h from Southwest | Mostly Clear | Mostly Clear |
| October 23 | 55°F13°C | 75°F24°C | 4 mph6 km/h from Southwest | Clear | Clear |
| October 24 | 61°F16°C | 80°F27°C | 3 mph5 km/h from Southwest | Clear | Clear |
| October 25 | 60°F15°C | 74°F23°C | 4 mph6 km/h from South | Mostly Clear | Mostly Cloudy |
| October 26 | 58°F14°C | 70°F21°C | 4 mph6 km/h from Southwest | Partly Cloudy | Partly Cloudy |
| October 27 | 56°F13°C | 72°F22°C | 3 mph5 km/h from West | Clear | Clear |
Yes
Low of 56°F14°C, High of 70°F21°CWind: 5 mph8 km/h
Precipitation: None