Yes

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

Why? Because it's pretty chilly!
57°F14°C & Clear

Wind is 3 mph5 km/h from the East, gusting to 4 mph6 km/h
October 28
11am57°F14°C3 mph5 km/h EastClear
12pm56°F14°C2 mph3 km/h EastClear
1pm56°F13°C2 mph3 km/h EastClear
2pm55°F13°C2 mph3 km/h EastClear
3pm57°F14°C2 mph3 km/h EastClear
4pm62°F17°C1 mph2 km/h EastClear
5pm68°F20°C2 mph4 km/h NorthwestClear
6pm73°F23°C3 mph6 km/h NorthwestClear
7pm76°F24°C5 mph7 km/h WestClear
8pm78°F25°C5 mph9 km/h WestClear
9pm79°F26°C6 mph10 km/h WestClear
10pm78°F25°C7 mph11 km/h WestClear
DateLowHighWindDayNight
October 2855°F13°C79°F26°C4 mph6 km/h from WestClearClear
October 2958°F15°C85°F29°C5 mph8 km/h from NorthwestClearClear
October 3058°F15°C79°F26°C4 mph6 km/h from WestClearClear
October 3157°F14°C74°F23°C4 mph7 km/h from SouthwestMostly ClearPartly Cloudy
November 156°F13°C73°F23°C4 mph7 km/h from WestMostly ClearMostly Clear
November 257°F14°C75°F24°C4 mph6 km/h from WestPartly CloudyPartly Cloudy
November 357°F14°C72°F22°C4 mph6 km/h from WestMostly ClearPartly Cloudy

Yes

Low of 58°F15°C, High of 84°F29°C
Wind: 5 mph8 km/h
Precipitation: None

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