Yes

you do need a jacket based on the weather in Courtland, CA 95615, USA 1 second ago

Why? Because it's quite chilly.
46°F8°C & Mostly Clear

Wind is 4 mph7 km/h from the S, gusting to 9 mph14 km/h
March 28
9am46°F8°C5 mph8 km/h SMostly Clear
10am46°F8°C5 mph8 km/h SMostly Clear
11am48°F9°C5 mph9 km/h SMostly Clear
12pm51°F11°C6 mph10 km/h SWMostly Clear
1pm53°F12°C7 mph11 km/h SWMostly Clear
2pm56°F13°C7 mph11 km/h SWMostly Clear
3pm58°F14°C7 mph12 km/h SWMostly Clear
4pm59°F15°C8 mph12 km/h SWPartly Cloudy
5pm60°F16°C8 mph13 km/h SWPartly Cloudy
6pm61°F16°C9 mph14 km/h SWMostly Cloudy
7pm60°F16°C10 mph16 km/h SWMostly Cloudy
8pm59°F15°C10 mph16 km/h WMostly Cloudy
DateLowHighWindDayNight
March 2846°F8°C61°F16°C8 mph13 km/h from SWPartly CloudyMostly Cloudy
March 2944°F6°C57°F14°C11 mph17 km/h from SERainRain
March 3047°F8°C59°F15°C7 mph12 km/h from ERainMostly Cloudy
March 3145°F7°C63°F17°C4 mph6 km/h from NWDrizzleClear
April 143°F6°C73°F23°C5 mph8 km/h from NWClearClear
April 246°F8°C74°F24°C3 mph4 km/h from SClearClear
April 349°F10°C74°F23°C4 mph6 km/h from WMostly ClearPartly Cloudy

Yes

Low of 44°F7°C, High of 57°F14°C
Wind: 11 mph17 km/h
Precipitation: 68% rain

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