Yes

you do need a jacket based on the weather in Irvine, CA 92617, USA 1 second ago

Why? Because sorry, it's too cool for just a hoodie!
54°F12°C & Mostly Clear

Wind is 2 mph4 km/h from the Southeast, gusting to 3 mph5 km/h
May 14
5am54°F12°C3 mph5 km/h SoutheastMostly Clear
6am54°F12°C4 mph7 km/h SoutheastMostly Clear
7am53°F12°C5 mph8 km/h SoutheastClear
8am53°F12°C5 mph7 km/h SoutheastClear
9am53°F12°C5 mph8 km/h SoutheastClear
10am56°F13°C4 mph7 km/h SoutheastClear
11am61°F16°C4 mph6 km/h SoutheastClear
12pm64°F18°C3 mph5 km/h SouthClear
1pm65°F19°C5 mph8 km/h SouthwestMostly Clear
2pm67°F20°C7 mph11 km/h SouthwestMostly Clear
3pm69°F21°C8 mph14 km/h SouthwestClear
4pm70°F21°C9 mph15 km/h SouthwestClear
DateLowHighWindDayNight
May 1453°F11°C71°F22°C7 mph12 km/h from SouthwestClearMostly Clear
May 1556°F13°C71°F22°C7 mph12 km/h from SouthwestMostly ClearMostly Clear
May 1656°F13°C69°F21°C7 mph11 km/h from SouthwestMostly CloudyMostly Cloudy
May 1757°F14°C65°F18°C8 mph14 km/h from SouthMostly CloudyDrizzle
May 1856°F13°C67°F20°C7 mph12 km/h from SouthPartly CloudyMostly Clear
May 1955°F13°C76°F25°C6 mph10 km/h from SouthwestClearClear
May 2058°F14°C78°F26°C5 mph8 km/h from WestClearMostly Clear

Yes

Low of 56°F14°C, High of 71°F22°C
Wind: 7 mph12 km/h
Precipitation: None

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