Yes
you do need a jacket based on the weather in Santa Ana, CA, USA 1 second ago
Why? Because it's not very warm out!
54°F12°C & Mostly Clear
Wind is 2 mph4 km/h from the North, gusting to 3 mph5 km/h
| October 15 | ||||
| 2pm | 54°F12°C | 3 mph4 km/h North | Mostly Clear | |
| 3pm | 56°F13°C | 2 mph3 km/h North | Mostly Clear | |
| 4pm | 59°F15°C | 1 mph2 km/h Northwest | Mostly Clear | |
| 5pm | 62°F17°C | 2 mph3 km/h Northwest | Mostly Clear | |
| 6pm | 64°F18°C | 3 mph5 km/h Northwest | Mostly Clear | |
| 7pm | 66°F19°C | 4 mph6 km/h West | Clear | |
| 8pm | 67°F20°C | 4 mph7 km/h West | Clear | |
| 9pm | 68°F20°C | 5 mph8 km/h West | Mostly Clear | |
| 10pm | 69°F20°C | 6 mph9 km/h West | Clear | |
| 11pm | 68°F20°C | 7 mph10 km/h West | Clear | |
| October 16 | ||||
| 12am | 67°F19°C | 7 mph11 km/h West | Clear | |
| 1am | 64°F18°C | 5 mph8 km/h West | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| October 15 | 54°F12°C | 69°F20°C | 4 mph7 km/h from West | Clear | Clear |
| October 16 | 51°F11°C | 75°F24°C | 4 mph6 km/h from West | Clear | Clear |
| October 17 | 54°F12°C | 79°F26°C | 4 mph6 km/h from West | Clear | Clear |
| October 18 | 56°F13°C | 81°F27°C | 3 mph5 km/h from West | Mostly Clear | Partly Cloudy |
| October 19 | 59°F15°C | 79°F26°C | 4 mph6 km/h from Southwest | Mostly Clear | Clear |
| October 20 | 58°F14°C | 80°F26°C | 4 mph7 km/h from Southwest | Clear | Mostly Clear |
| October 21 | 59°F15°C | 71°F22°C | 5 mph8 km/h from Southwest | Mostly Clear | Mostly Clear |
Yes
Low of 51°F11°C, High of 75°F24°CWind: 4 mph6 km/h
Precipitation: None