No
you don't need a jacket based on the weather in Rancho Cucamonga, CA, USA 1 second ago
65°F18°C & Clear
Wind is 3 mph5 km/h from the West, gusting to 6 mph10 km/h
| July 2 | ||||
| 3am | 65°F18°C | 3 mph5 km/h West | Clear | |
| 4am | 63°F17°C | 2 mph4 km/h West | Clear | |
| 5am | 62°F17°C | 1 mph2 km/h Southwest | Clear | |
| 6am | 61°F16°C | 2 mph3 km/h East | Clear | |
| 7am | 60°F15°C | 2 mph3 km/h East | Clear | |
| 8am | 59°F15°C | 3 mph4 km/h Northeast | Clear | |
| 9am | 59°F15°C | 2 mph4 km/h Northeast | Clear | |
| 10am | 63°F17°C | 1 mph2 km/h South | Clear | |
| 11am | 66°F19°C | 2 mph3 km/h South | Clear | |
| 12pm | 70°F21°C | 3 mph4 km/h South | Clear | |
| 1pm | 73°F23°C | 4 mph6 km/h Southwest | Clear | |
| 2pm | 78°F26°C | 5 mph8 km/h Southwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| July 1 | 62°F17°C | 88°F31°C | 6 mph10 km/h from Southwest | Clear | Clear |
| July 2 | 58°F15°C | 88°F31°C | 7 mph11 km/h from Southwest | Clear | Clear |
| July 3 | 62°F16°C | 86°F30°C | 6 mph10 km/h from Southwest | Clear | Clear |
| July 4 | 63°F17°C | 89°F32°C | 6 mph10 km/h from Southwest | Clear | Clear |
| July 5 | 64°F18°C | 89°F32°C | 5 mph9 km/h from Southwest | Clear | Clear |
| July 6 | 65°F18°C | 90°F32°C | 6 mph9 km/h from Southwest | Clear | Clear |
| July 7 | 65°F18°C | 90°F32°C | 6 mph9 km/h from Southwest | Clear | Clear |
Yes
Low of 58°F15°C, High of 88°F31°CWind: 7 mph11 km/h
Precipitation: None