No
you don't need a jacket based on the weather in Rancho Cucamonga, CA, USA 1 second ago
75°F24°C & Cloudy
Wind is 7 mph12 km/h from the Southwest, gusting to 11 mph18 km/h
| September 26 | ||||
| 6pm | 76°F24°C | 9 mph14 km/h Southwest | Mostly Clear | |
| 7pm | 75°F24°C | 10 mph16 km/h Southwest | Mostly Clear | |
| 8pm | 73°F23°C | 9 mph15 km/h Southwest | Mostly Clear | |
| 9pm | 71°F22°C | 7 mph12 km/h West | Mostly Clear | |
| 10pm | 69°F21°C | 6 mph10 km/h West | Mostly Clear | |
| 11pm | 67°F20°C | 5 mph8 km/h West | Mostly Cloudy | |
| September 27 | ||||
| 12am | 66°F19°C | 6 mph10 km/h West | Mostly Cloudy | |
| 1am | 65°F19°C | 3 mph4 km/h Southwest | Mostly Cloudy | |
| 2am | 65°F18°C | 4 mph6 km/h West | Mostly Cloudy | |
| 3am | 64°F18°C | 3 mph5 km/h Southwest | Mostly Cloudy | |
| 4am | 63°F17°C | 3 mph5 km/h Southwest | Mostly Cloudy | |
| 5am | 63°F17°C | 3 mph5 km/h Southwest | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 26 | 63°F17°C | 76°F24°C | 6 mph10 km/h from Southwest | Partly Cloudy | Mostly Cloudy |
| September 27 | 62°F17°C | 76°F25°C | 5 mph8 km/h from Southwest | Mostly Cloudy | Partly Cloudy |
| September 28 | 61°F16°C | 78°F26°C | 5 mph8 km/h from Southwest | Partly Cloudy | Mostly Clear |
| September 29 | 61°F16°C | 80°F27°C | 6 mph9 km/h from Southwest | Mostly Clear | Mostly Cloudy |
| September 30 | 59°F15°C | 75°F24°C | 5 mph8 km/h from Southwest | Mostly Clear | Clear |
| October 1 | 58°F14°C | 77°F25°C | 5 mph7 km/h from Southwest | Clear | Clear |
| October 2 | 59°F15°C | 78°F26°C | 5 mph8 km/h from Southwest | Clear | Clear |
No
Low of 62°F17°C, High of 76°F25°CWind: 5 mph8 km/h
Precipitation: 22% rain