Yes

you do need a jacket based on the weather in Chula Vista, CA 91914, USA 1 second ago

Why? Because a jacket will keep you cozy, but you won't break a seat!
51°F10°C & Cloudy

Wind is 2 mph4 km/h from the Northeast, gusting to 4 mph7 km/h
December 26
3am50°F10°C3 mph5 km/h NortheastMostly Cloudy
4am50°F10°C4 mph6 km/h NortheastPartly Cloudy
5am49°F10°C4 mph6 km/h NortheastMostly Cloudy
6am49°F9°C3 mph5 km/h EastMostly Cloudy
7am48°F9°C3 mph5 km/h EastPartly Cloudy
8am48°F9°C2 mph3 km/h EastPartly Cloudy
9am47°F8°C3 mph5 km/h EastMostly Cloudy
10am48°F9°C3 mph5 km/h EastMostly Cloudy
11am51°F10°C3 mph4 km/h EastMostly Cloudy
12pm55°F13°C3 mph4 km/h SoutheastMostly Cloudy
1pm58°F14°C2 mph3 km/h SouthwestMostly Cloudy
2pm61°F16°C4 mph7 km/h WestMostly Cloudy
DateLowHighWindDayNight
December 2548°F9°C60°F16°C4 mph7 km/h from WestMostly ClearMostly Cloudy
December 2647°F8°C65°F18°C4 mph6 km/h from WestPartly CloudyPartly Cloudy
December 2748°F9°C64°F18°C5 mph7 km/h from WestMostly CloudyMostly Cloudy
December 2850°F10°C68°F20°C3 mph6 km/h from WestPartly CloudyPartly Cloudy
December 2951°F11°C66°F19°C4 mph6 km/h from WestMostly ClearMostly Clear
December 3049°F9°C65°F18°C4 mph6 km/h from WestClearMostly Clear
December 3150°F10°C70°F21°C2 mph3 km/h from NorthMostly CloudyPartly Cloudy

Yes

Low of 47°F9°C, High of 65°F19°C
Wind: 4 mph6 km/h
Precipitation: None

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