Yes

you do need a jacket based on the weather in Los Angeles (South Los Angeles), California, United States 1 second ago

Why? Because it's pretty chilly.
55°F13°C & Mostly Clear

Wind is 2 mph3 km/h from the S, gusting to 4 mph7 km/h
April 20
5am55°F13°C2 mph4 km/h SEPartly Cloudy
6am54°F12°C3 mph4 km/h SEPartly Cloudy
7am55°F13°C3 mph4 km/h SEMostly Cloudy
8am55°F13°C3 mph4 km/h EMostly Cloudy
9am55°F13°C2 mph4 km/h EMostly Cloudy
10am56°F13°C2 mph4 km/h EMostly Cloudy
11am57°F14°C3 mph4 km/h EMostly Cloudy
12pm59°F15°C2 mph4 km/h SEMostly Cloudy
1pm61°F16°C2 mph4 km/h SMostly Cloudy
2pm64°F18°C2 mph4 km/h SWPartly Cloudy
3pm67°F20°C4 mph6 km/h SWMostly Clear
4pm70°F21°C7 mph11 km/h SWMostly Clear
DateLowHighWindDayNight
April 2054°F12°C71°F22°C6 mph9 km/h from SWMostly ClearMostly Clear
April 2155°F13°C74°F23°C6 mph10 km/h from SWMostly ClearPartly Cloudy
April 2256°F13°C74°F23°C6 mph10 km/h from SWPartly CloudyPartly Cloudy
April 2356°F13°C68°F20°C7 mph11 km/h from SWPartly CloudyMostly Clear
April 2454°F12°C67°F20°C8 mph12 km/h from SWMostly ClearMostly Clear
April 2553°F12°C65°F18°C7 mph12 km/h from SWPartly CloudyPartly Cloudy
April 2653°F12°C67°F20°C8 mph13 km/h from SWPartly CloudyMostly Clear

Yes

Low of 55°F13°C, High of 74°F24°C
Wind: 6 mph10 km/h
Precipitation: None

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