No
you don't need a jacket based on the weather in Rancho Cucamonga, CA, USA 1 second ago
72°F22°C & Clear
Wind is 2 mph4 km/h from the West, gusting to 6 mph10 km/h
| August 27 | ||||
| 4am | 71°F21°C | 2 mph3 km/h West | Clear | |
| 5am | 69°F21°C | 1 mph2 km/h South | Clear | |
| 6am | 68°F20°C | 3 mph4 km/h Northeast | Clear | |
| 7am | 67°F20°C | 2 mph3 km/h East | Clear | |
| 8am | 67°F19°C | 3 mph4 km/h Northeast | Clear | |
| 9am | 67°F19°C | 3 mph4 km/h Northeast | Clear | |
| 10am | 70°F21°C | 2 mph3 km/h Northeast | Clear | |
| 11am | 74°F23°C | 1 mph2 km/h East | Clear | |
| 12pm | 77°F25°C | 2 mph4 km/h South | Clear | |
| 1pm | 81°F27°C | 3 mph5 km/h South | Clear | |
| 2pm | 85°F29°C | 4 mph7 km/h Southwest | Clear | |
| 3pm | 87°F31°C | 6 mph9 km/h Southwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| August 27 | 67°F19°C | 90°F32°C | 6 mph10 km/h from Southwest | Mostly Clear | Cloudy |
| August 28 | 68°F20°C | 84°F29°C | 4 mph7 km/h from Southwest | Mostly Cloudy | Mostly Clear |
| August 29 | 70°F21°C | 89°F32°C | 5 mph8 km/h from Southwest | Mostly Clear | Clear |
| August 30 | 70°F21°C | 93°F34°C | 5 mph9 km/h from Southwest | Clear | Clear |
| August 31 | 72°F22°C | 93°F34°C | 5 mph9 km/h from Southwest | Clear | Clear |
| September 1 | 72°F22°C | 93°F34°C | 5 mph8 km/h from Southwest | Clear | Clear |
| September 2 | 70°F21°C | 92°F33°C | 5 mph9 km/h from Southwest | Clear | Clear |
No
Low of 68°F20°C, High of 84°F29°CWind: 4 mph7 km/h
Precipitation: None