No
you don't need a jacket based on the weather in Altadena, CA, USA 1 second ago
84°F29°C & Clear
Wind is 7 mph11 km/h from the South, gusting to 10 mph16 km/h
| September 22 | ||||
| 6pm | 84°F29°C | 7 mph11 km/h South | Clear | |
| 7pm | 83°F28°C | 7 mph12 km/h Southwest | Clear | |
| 8pm | 81°F27°C | 6 mph10 km/h Southwest | Mostly Clear | |
| 9pm | 79°F26°C | 4 mph6 km/h Southwest | Mostly Clear | |
| 10pm | 77°F25°C | 3 mph5 km/h Northwest | Clear | |
| 11pm | 75°F24°C | 2 mph4 km/h Northwest | Clear | |
| September 23 | ||||
| 12am | 74°F23°C | 1 mph2 km/h North | Clear | |
| 1am | 73°F23°C | 1 mph2 km/h Northeast | Clear | |
| 2am | 72°F22°C | 2 mph3 km/h Northeast | Clear | |
| 3am | 71°F22°C | 2 mph3 km/h North | Clear | |
| 4am | 71°F22°C | 2 mph3 km/h North | Mostly Clear | |
| 5am | 71°F21°C | 2 mph4 km/h North | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 22 | 65°F18°C | 84°F29°C | 4 mph6 km/h from South | Mostly Clear | Clear |
| September 23 | 69°F21°C | 88°F31°C | 4 mph7 km/h from South | Mostly Clear | Mostly Clear |
| September 24 | 67°F19°C | 82°F28°C | 5 mph7 km/h from South | Mostly Clear | Clear |
| September 25 | 61°F16°C | 78°F26°C | 5 mph8 km/h from Southwest | Mostly Clear | Mostly Clear |
| September 26 | 61°F16°C | 77°F25°C | 5 mph8 km/h from Southwest | Mostly Clear | Partly Cloudy |
| September 27 | 62°F17°C | 78°F26°C | 4 mph6 km/h from Southwest | Partly Cloudy | Mostly Clear |
| September 28 | 63°F17°C | 82°F28°C | 4 mph7 km/h from Southwest | Mostly Clear | Clear |
No
Low of 69°F21°C, High of 89°F32°CWind: 4 mph7 km/h
Precipitation: None