No
you don't need a jacket based on the weather in Ontario, CA, USA 1 second ago
88°F31°C & Clear
Wind is 12 mph19 km/h from the Southwest, gusting to 17 mph28 km/h
| July 6 | ||||
| 8pm | 87°F31°C | 12 mph19 km/h West | Clear | |
| 9pm | 85°F29°C | 11 mph18 km/h West | Clear | |
| 10pm | 81°F27°C | 10 mph16 km/h West | Clear | |
| 11pm | 76°F24°C | 9 mph14 km/h West | Clear | |
| July 7 | ||||
| 12am | 72°F22°C | 7 mph11 km/h West | Clear | |
| 1am | 69°F21°C | 5 mph8 km/h West | Clear | |
| 2am | 67°F19°C | 4 mph6 km/h West | Clear | |
| 3am | 66°F19°C | 3 mph5 km/h West | Clear | |
| 4am | 64°F18°C | 3 mph5 km/h West | Clear | |
| 5am | 63°F17°C | 3 mph5 km/h West | Clear | |
| 6am | 62°F17°C | 3 mph4 km/h West | Clear | |
| 7am | 61°F16°C | 2 mph4 km/h Northwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| July 6 | 62°F17°C | 90°F32°C | 6 mph10 km/h from West | Clear | Clear |
| July 7 | 60°F15°C | 89°F32°C | 7 mph10 km/h from Southwest | Clear | Clear |
| July 8 | 63°F17°C | 93°F34°C | 7 mph11 km/h from Southwest | Clear | Mostly Clear |
| July 9 | 68°F20°C | 95°F35°C | 7 mph11 km/h from Southwest | Clear | Mostly Clear |
| July 10 | 68°F20°C | 95°F35°C | 6 mph10 km/h from Southwest | Clear | Clear |
| July 11 | 67°F19°C | 89°F32°C | 6 mph10 km/h from Southwest | Clear | Clear |
| July 12 | 64°F18°C | 85°F29°C | 7 mph11 km/h from Southwest | Clear | Clear |
No
Low of 60°F16°C, High of 89°F32°CWind: 7 mph10 km/h
Precipitation: None