No
you don't need a jacket based on the weather in Santa Ana (Lacy), California, United States 1 second ago
84°F29°C & Mostly Cloudy
Wind is 9 mph14 km/h from the Southwest, gusting to 12 mph20 km/h
| September 17 | ||||
| 4pm | 84°F29°C | 8 mph12 km/h Southwest | Cloudy | |
| 5pm | 84°F29°C | 8 mph14 km/h Southwest | Cloudy | |
| 6pm | 82°F28°C | 9 mph15 km/h Southwest | Cloudy | |
| 7pm | 81°F27°C | 8 mph12 km/h Southwest | Cloudy | |
| 8pm | 79°F26°C | 7 mph11 km/h Southwest | Cloudy | |
| 9pm | 77°F25°C | 6 mph9 km/h Southwest | Cloudy | |
| 10pm | 76°F24°C | 4 mph7 km/h Southwest | Cloudy | |
| 11pm | 74°F23°C | 4 mph6 km/h Southwest | Cloudy | |
| September 18 | ||||
| 12am | 74°F23°C | 4 mph6 km/h Southwest | Cloudy | |
| 1am | 73°F23°C | 4 mph6 km/h Southwest | Cloudy | |
| 2am | 72°F22°C | 3 mph4 km/h West | Cloudy | |
| 3am | 72°F22°C | 3 mph5 km/h West | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 17 | 70°F21°C | 85°F29°C | 6 mph9 km/h from Southwest | Mostly Cloudy | Thunderstorms |
| September 18 | 69°F20°C | 85°F29°C | 5 mph8 km/h from West | Rain | Drizzle |
| September 19 | 69°F20°C | 82°F28°C | 5 mph8 km/h from Southwest | Partly Cloudy | Mostly Clear |
| September 20 | 66°F19°C | 84°F29°C | 5 mph8 km/h from Southwest | Mostly Clear | Mostly Clear |
| September 21 | 66°F19°C | 87°F30°C | 5 mph7 km/h from West | Mostly Clear | Partly Cloudy |
| September 22 | 67°F20°C | 86°F30°C | 4 mph6 km/h from Southwest | Mostly Clear | Clear |
| September 23 | 68°F20°C | 85°F29°C | 5 mph8 km/h from Southwest | Clear | Clear |
No
Low of 69°F21°C, High of 85°F30°CWind: 5 mph8 km/h
Precipitation: 67% rain