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
4am65°F18°C4 mph7 km/h NortheastMostly Cloudy
5am63°F17°C2 mph4 km/h SouthMostly Cloudy
6am61°F16°C3 mph5 km/h SoutheastMostly Clear
7am59°F15°C2 mph3 km/h EastMostly Cloudy
8am59°F15°C2 mph4 km/h EastPartly Cloudy
9am58°F15°C2 mph3 km/h SoutheastPartly Cloudy
10am58°F14°C3 mph5 km/h SoutheastMostly Cloudy
11am58°F15°C3 mph4 km/h SoutheastPartly Cloudy
12pm57°F14°C3 mph5 km/h SoutheastPartly Cloudy
1pm57°F14°C3 mph4 km/h SoutheastPartly Cloudy
2pm56°F13°C3 mph4 km/h SoutheastPartly Cloudy
3pm57°F14°C3 mph4 km/h SoutheastPartly Cloudy
DateLowHighWindDayNight
October 2159°F15°C82°F28°C2 mph3 km/h from SouthMostly ClearPartly Cloudy
October 2256°F13°C69°F21°C5 mph8 km/h from SouthwestMostly ClearMostly Clear
October 2355°F13°C75°F24°C4 mph6 km/h from SouthwestClearClear
October 2461°F16°C80°F27°C3 mph5 km/h from SouthwestClearClear
October 2560°F15°C74°F23°C4 mph6 km/h from SouthMostly ClearMostly Cloudy
October 2658°F14°C70°F21°C4 mph6 km/h from SouthwestPartly CloudyPartly Cloudy
October 2756°F13°C72°F22°C3 mph5 km/h from WestClearClear

Yes

Low of 56°F14°C, High of 70°F21°C
Wind: 5 mph8 km/h
Precipitation: None

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