No
you don't need a jacket based on the weather in Lake Forest, CA, USA 1 second ago
70°F21°C & Clear
Wind is 5 mph8 km/h from the West, gusting to 7 mph12 km/h
| October 26 | ||||
| 1am | 67°F19°C | 5 mph7 km/h West | Mostly Clear | |
| 2am | 64°F18°C | 3 mph4 km/h West | Partly Cloudy | |
| 3am | 62°F17°C | 1 mph2 km/h Southwest | Partly Cloudy | |
| 4am | 61°F16°C | 1 mph2 km/h South | Partly Cloudy | |
| 5am | 61°F16°C | 2 mph3 km/h East | Mostly Cloudy | |
| 6am | 59°F15°C | 2 mph4 km/h East | Partly Cloudy | |
| 7am | 59°F15°C | 3 mph4 km/h East | Partly Cloudy | |
| 8am | 59°F15°C | 3 mph5 km/h East | Partly Cloudy | |
| 9am | 58°F14°C | 3 mph4 km/h East | Mostly Cloudy | |
| 10am | 57°F14°C | 2 mph4 km/h East | Mostly Cloudy | |
| 11am | 57°F14°C | 2 mph3 km/h East | Mostly Cloudy | |
| 12pm | 56°F14°C | 2 mph3 km/h East | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| October 25 | 59°F15°C | 73°F23°C | 3 mph4 km/h from West | Partly Cloudy | Partly Cloudy |
| October 26 | 56°F13°C | 74°F23°C | 4 mph6 km/h from West | Mostly Clear | Clear |
| October 27 | 55°F13°C | 77°F25°C | 4 mph6 km/h from West | Clear | Clear |
| October 28 | 60°F15°C | 85°F29°C | 4 mph6 km/h from Northwest | Clear | Clear |
| October 29 | 63°F17°C | 88°F31°C | 4 mph6 km/h from West | Clear | Clear |
| October 30 | 64°F18°C | 85°F30°C | 3 mph6 km/h from Southwest | Clear | Clear |
| October 31 | 60°F16°C | 80°F27°C | 3 mph5 km/h from West | Clear | Mostly Clear |
Yes
Low of 55°F13°C, High of 74°F24°CWind: 4 mph6 km/h
Precipitation: None