No
you don't need a jacket based on the weather in Simi Valley, CA, USA 1 second ago
75°F24°C & Clear
Wind is 2 mph3 km/h from the East, gusting to 2 mph4 km/h
| September 17 | ||||
| 4am | 74°F24°C | 2 mph3 km/h South | Clear | |
| 5am | 73°F23°C | 2 mph3 km/h Southwest | Clear | |
| 6am | 71°F22°C | 2 mph4 km/h West | Clear | |
| 7am | 70°F21°C | 2 mph4 km/h Northwest | Clear | |
| 8am | 69°F21°C | 2 mph3 km/h Northeast | Mostly Clear | |
| 9am | 69°F20°C | 2 mph3 km/h Northeast | Mostly Cloudy | |
| 10am | 68°F20°C | 2 mph3 km/h North | Mostly Cloudy | |
| 11am | 72°F22°C | 1 mph2 km/h Northeast | Cloudy | |
| 12pm | 77°F25°C | 2 mph4 km/h West | Mostly Cloudy | |
| 1pm | 81°F27°C | 4 mph7 km/h West | Cloudy | |
| 2pm | 84°F29°C | 6 mph9 km/h West | Cloudy | |
| 3pm | 86°F30°C | 7 mph12 km/h West | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 17 | 68°F20°C | 87°F30°C | 6 mph9 km/h from West | Cloudy | Rain |
| September 18 | 67°F19°C | 81°F27°C | 4 mph7 km/h from South | Rain | Drizzle |
| September 19 | 66°F19°C | 82°F28°C | 5 mph7 km/h from Southwest | Thunderstorms | Mostly Clear |
| September 20 | 64°F18°C | 86°F30°C | 4 mph7 km/h from West | Clear | Clear |
| September 21 | 65°F19°C | 87°F31°C | 5 mph8 km/h from West | Mostly Clear | Clear |
| September 22 | 66°F19°C | 90°F32°C | 4 mph6 km/h from West | Mostly Clear | Mostly Clear |
| September 23 | 66°F19°C | 86°F30°C | 5 mph8 km/h from Southwest | Mostly Clear | Clear |
No
Low of 67°F20°C, High of 82°F28°CWind: 4 mph7 km/h
Precipitation: 72% rain