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
6pm84°F29°C7 mph11 km/h SouthClear
7pm83°F28°C7 mph12 km/h SouthwestClear
8pm81°F27°C6 mph10 km/h SouthwestMostly Clear
9pm79°F26°C4 mph6 km/h SouthwestMostly Clear
10pm77°F25°C3 mph5 km/h NorthwestClear
11pm75°F24°C2 mph4 km/h NorthwestClear
September 23
12am74°F23°C1 mph2 km/h NorthClear
1am73°F23°C1 mph2 km/h NortheastClear
2am72°F22°C2 mph3 km/h NortheastClear
3am71°F22°C2 mph3 km/h NorthClear
4am71°F22°C2 mph3 km/h NorthMostly Clear
5am71°F21°C2 mph4 km/h NorthMostly Clear
DateLowHighWindDayNight
September 2265°F18°C84°F29°C4 mph6 km/h from SouthMostly ClearClear
September 2369°F21°C88°F31°C4 mph7 km/h from SouthMostly ClearMostly Clear
September 2467°F19°C82°F28°C5 mph7 km/h from SouthMostly ClearClear
September 2561°F16°C78°F26°C5 mph8 km/h from SouthwestMostly ClearMostly Clear
September 2661°F16°C77°F25°C5 mph8 km/h from SouthwestMostly ClearPartly Cloudy
September 2762°F17°C78°F26°C4 mph6 km/h from SouthwestPartly CloudyMostly Clear
September 2863°F17°C82°F28°C4 mph7 km/h from SouthwestMostly ClearClear

No

Low of 69°F21°C, High of 89°F32°C
Wind: 4 mph7 km/h
Precipitation: None

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