Yes

you do need a jacket based on the weather in Oxnard, CA 93033, USA 1 second ago

Why? Because it's pretty chilly.
53°F12°C & Clear

Wind is 2 mph4 km/h from the NE, gusting to 7 mph11 km/h
April 26
4am53°F12°C3 mph5 km/h NEMostly Clear
5am52°F11°C3 mph5 km/h NEMostly Clear
6am51°F11°C3 mph4 km/h NEMostly Clear
7am50°F10°C3 mph5 km/h NMostly Clear
8am51°F10°C3 mph4 km/h NEPartly Cloudy
9am51°F11°C4 mph6 km/h NEPartly Cloudy
10am52°F11°C4 mph6 km/h NEMostly Cloudy
11am55°F13°C3 mph5 km/h NWMostly Cloudy
12pm58°F14°C4 mph6 km/h SWPartly Cloudy
1pm60°F16°C5 mph8 km/h WMostly Clear
2pm62°F17°C7 mph12 km/h WMostly Clear
3pm64°F18°C11 mph17 km/h WClear
DateLowHighWindDayNight
April 2650°F10°C68°F20°C13 mph20 km/h from WMostly ClearClear
April 2748°F9°C68°F20°C6 mph10 km/h from WClearClear
April 2848°F9°C69°F20°C6 mph9 km/h from SWClearClear
April 2950°F10°C69°F21°C5 mph8 km/h from WClearClear
April 3050°F10°C69°F20°C5 mph9 km/h from SWClearClear
May 152°F11°C68°F20°C6 mph9 km/h from SWMostly ClearMostly Clear
May 251°F11°C68°F20°C6 mph10 km/h from SWMostly ClearMostly Clear

Yes

Low of 48°F9°C, High of 68°F20°C
Wind: 6 mph10 km/h
Precipitation: None

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