Yes
you do need a jacket based on the weather in Simi Valley, CA, USA 1 second ago
Why? Because just cool enough for a jacket, but not warm enough to ditch it!
57°F14°C & Partly Cloudy
Wind is 2 mph3 km/h from the North, gusting to 3 mph5 km/h
| October 25 | ||||
| 4pm | 59°F15°C | 2 mph3 km/h East | Partly Cloudy | |
| 5pm | 64°F18°C | 1 mph2 km/h Northeast | Mostly Clear | |
| 6pm | 69°F21°C | 4 mph6 km/h West | Clear | |
| 7pm | 73°F23°C | 4 mph7 km/h West | Mostly Clear | |
| 8pm | 75°F24°C | 6 mph10 km/h West | Mostly Clear | |
| 9pm | 76°F24°C | 7 mph12 km/h West | Mostly Cloudy | |
| 10pm | 75°F24°C | 8 mph12 km/h West | Mostly Clear | |
| 11pm | 75°F24°C | 6 mph10 km/h West | Partly Cloudy | |
| October 26 | ||||
| 12am | 72°F22°C | 5 mph8 km/h West | Mostly Cloudy | |
| 1am | 69°F20°C | 4 mph6 km/h West | Mostly Cloudy | |
| 2am | 65°F18°C | 2 mph4 km/h West | Partly Cloudy | |
| 3am | 62°F17°C | 1 mph2 km/h North | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| October 25 | 53°F12°C | 76°F24°C | 4 mph7 km/h from West | Partly Cloudy | Partly Cloudy |
| October 26 | 53°F12°C | 76°F25°C | 4 mph6 km/h from West | Mostly Clear | Clear |
| October 27 | 54°F12°C | 82°F28°C | 5 mph8 km/h from North | Clear | Clear |
| October 28 | 62°F17°C | 89°F31°C | 9 mph15 km/h from Northeast | Clear | Clear |
| October 29 | 64°F18°C | 90°F32°C | 7 mph11 km/h from North | Clear | Clear |
| October 30 | 59°F15°C | 85°F29°C | 4 mph7 km/h from West | Mostly Clear | Mostly Clear |
| October 31 | 57°F14°C | 81°F27°C | 5 mph7 km/h from North | Clear | Mostly Clear |
Yes
Low of 53°F12°C, High of 76°F25°CWind: 4 mph6 km/h
Precipitation: None