No

you don't need a jacket based on the weather in Placentia, CA 92870, USA 1 second ago

67°F19°C & Clear

Wind is 5 mph8 km/h from the North, gusting to 9 mph15 km/h
January 9
2pm67°F20°C6 mph9 km/h NorthClear
3pm71°F21°C6 mph10 km/h NorthClear
4pm72°F22°C6 mph10 km/h NortheastClear
5pm73°F23°C7 mph11 km/h NorthClear
6pm73°F23°C7 mph11 km/h NorthClear
7pm71°F22°C7 mph11 km/h NorthClear
8pm66°F19°C6 mph10 km/h NortheastClear
9pm64°F18°C6 mph10 km/h NortheastClear
10pm61°F16°C8 mph12 km/h NortheastClear
11pm60°F16°C8 mph12 km/h NortheastClear
January 10
12am60°F16°C10 mph16 km/h NortheastClear
1am60°F15°C10 mph17 km/h NortheastClear
DateLowHighWindDayNight
January 945°F7°C73°F23°C6 mph9 km/h from NorthClearClear
January 1048°F9°C70°F21°C5 mph8 km/h from WestClearClear
January 1145°F7°C68°F20°C4 mph6 km/h from NorthClearClear
January 1249°F9°C68°F20°C6 mph9 km/h from NorthClearMostly Clear
January 1345°F7°C66°F19°C8 mph13 km/h from EastClearClear
January 1448°F9°C68°F20°C10 mph16 km/h from NortheastClearMostly Clear
January 1549°F10°C70°F21°C6 mph10 km/h from SoutheastClearMostly Clear

Yes

Low of 48°F9°C, High of 70°F21°C
Wind: 5 mph8 km/h
Precipitation: None

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