No

you don't need a jacket based on the weather in California, USA 1 second ago

72°F22°C & Clear

Wind is 7 mph11 km/h from the Northwest, gusting to 16 mph26 km/h
May 12
1am69°F20°C8 mph13 km/h NorthwestClear
2am65°F18°C9 mph15 km/h NorthwestClear
3am61°F16°C8 mph13 km/h NorthwestClear
4am58°F15°C6 mph10 km/h NorthwestClear
5am56°F13°C5 mph8 km/h NorthwestClear
6am54°F12°C5 mph8 km/h WestClear
7am52°F11°C3 mph5 km/h WestClear
8am50°F10°C3 mph4 km/h WestClear
9am49°F10°C2 mph3 km/h WestClear
10am52°F11°C2 mph4 km/h NorthwestClear
11am56°F13°C3 mph5 km/h WestClear
12pm60°F15°C5 mph7 km/h WestClear
DateLowHighWindDayNight
May 1159°F15°C88°F31°C5 mph9 km/h from WestClearClear
May 1249°F10°C75°F24°C6 mph10 km/h from WestClearPartly Cloudy
May 1348°F9°C71°F22°C7 mph11 km/h from NorthwestMostly ClearClear
May 1447°F9°C79°F26°C6 mph9 km/h from WestClearClear
May 1552°F11°C85°F29°C5 mph8 km/h from WestMostly ClearPartly Cloudy
May 1658°F14°C86°F30°C5 mph8 km/h from WestPartly CloudyMostly Clear
May 1755°F13°C83°F28°C7 mph11 km/h from WestPartly CloudyClear

Yes

Low of 49°F10°C, High of 75°F24°C
Wind: 6 mph10 km/h
Precipitation: None

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