Yes

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

Why? Because the air feels like the cozy middle ground between summer and winter!
52°F11°C & Mostly Cloudy

Wind is 2 mph3 km/h from the Northwest, gusting to 2 mph4 km/h
October 27
2pm52°F11°C2 mph3 km/h NorthwestPartly Cloudy
3pm53°F12°C2 mph3 km/h NortheastPartly Cloudy
4pm58°F14°C2 mph4 km/h EastMostly Clear
5pm64°F18°C2 mph3 km/h SoutheastClear
6pm70°F21°C2 mph3 km/h SouthClear
7pm75°F24°C3 mph5 km/h SouthwestClear
8pm77°F25°C3 mph5 km/h SouthwestClear
9pm79°F26°C3 mph5 km/h SouthwestClear
10pm80°F26°C4 mph6 km/h SouthwestClear
11pm79°F26°C5 mph8 km/h SouthwestClear
October 28
12am77°F25°C6 mph9 km/h SouthClear
1am71°F22°C5 mph7 km/h SouthwestClear
DateLowHighWindDayNight
October 2751°F10°C80°F26°C3 mph5 km/h from SouthClearClear
October 2858°F14°C91°F33°C6 mph9 km/h from NortheastClearClear
October 2961°F16°C93°F34°C5 mph8 km/h from NorthClearClear
October 3060°F16°C90°F32°C4 mph7 km/h from SouthwestClearClear
October 3156°F14°C86°F30°C4 mph6 km/h from SouthwestClearClear
November 156°F13°C87°F31°C3 mph5 km/h from SouthwestClearMostly Clear
November 257°F14°C86°F30°C3 mph5 km/h from SouthwestMostly ClearMostly Clear

Yes

Low of 57°F14°C, High of 91°F33°C
Wind: 6 mph9 km/h
Precipitation: None

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