No
you don't need a jacket based on the weather in Altadena, CA 91001, USA 1 second ago
70°F21°C & Clear
Wind is 3 mph5 km/h from the Southwest, gusting to 5 mph8 km/h
| October 24 | ||||
| 8pm | 71°F22°C | 4 mph7 km/h Southwest | Clear | |
| 9pm | 73°F23°C | 5 mph8 km/h Southwest | Clear | |
| 10pm | 73°F23°C | 5 mph8 km/h Southwest | Clear | |
| 11pm | 72°F22°C | 4 mph7 km/h Southwest | Clear | |
| October 25 | ||||
| 12am | 70°F21°C | 3 mph4 km/h Southwest | Clear | |
| 1am | 67°F20°C | 2 mph3 km/h West | Clear | |
| 2am | 66°F19°C | 2 mph3 km/h Northwest | Clear | |
| 3am | 64°F18°C | 2 mph4 km/h North | Clear | |
| 4am | 63°F17°C | 2 mph4 km/h North | Clear | |
| 5am | 63°F17°C | 3 mph4 km/h North | Clear | |
| 6am | 62°F17°C | 3 mph4 km/h North | Clear | |
| 7am | 61°F16°C | 3 mph5 km/h North | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| October 24 | 61°F16°C | 73°F23°C | 3 mph5 km/h from Southwest | Clear | Clear |
| October 25 | 58°F15°C | 71°F22°C | 4 mph6 km/h from South | Partly Cloudy | Partly Cloudy |
| October 26 | 57°F14°C | 70°F21°C | 4 mph6 km/h from Southwest | Mostly Clear | Clear |
| October 27 | 59°F15°C | 76°F25°C | 3 mph5 km/h from West | Clear | Clear |
| October 28 | 62°F17°C | 80°F27°C | 3 mph5 km/h from Northwest | Clear | Clear |
| October 29 | 65°F18°C | 80°F27°C | 3 mph5 km/h from Southwest | Clear | Mostly Clear |
| October 30 | 62°F16°C | 77°F25°C | 4 mph6 km/h from Southwest | Mostly Clear | Mostly Clear |
Yes
Low of 58°F15°C, High of 71°F22°CWind: 4 mph6 km/h
Precipitation: None