No
you don't need a jacket based on the weather in Ontario, CA, USA 12 minutes ago
61°F16°C & Clear
Wind is 5 mph8 km/h from the West, gusting to 12 mph20 km/h
| June 22 | ||||
| 2am | 61°F16°C | 5 mph8 km/h West | Mostly Clear | |
| 3am | 60°F15°C | 4 mph6 km/h West | Mostly Clear | |
| 4am | 59°F15°C | 3 mph5 km/h Northwest | Partly Cloudy | |
| 5am | 59°F15°C | 3 mph4 km/h West | Partly Cloudy | |
| 6am | 57°F14°C | 3 mph5 km/h Northwest | Clear | |
| 7am | 55°F13°C | 3 mph5 km/h North | Mostly Clear | |
| 8am | 54°F12°C | 3 mph4 km/h North | Clear | |
| 9am | 55°F13°C | 2 mph3 km/h Northwest | Clear | |
| 10am | 58°F14°C | 2 mph3 km/h West | Clear | |
| 11am | 61°F16°C | 3 mph5 km/h Southwest | Clear | |
| 12pm | 64°F18°C | 4 mph6 km/h Southwest | Clear | |
| 1pm | 68°F20°C | 4 mph7 km/h Southwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| June 21 | 60°F15°C | 74°F23°C | 6 mph10 km/h from West | Partly Cloudy | Mostly Clear |
| June 22 | 54°F12°C | 82°F28°C | 7 mph11 km/h from Southwest | Clear | Clear |
| June 23 | 58°F15°C | 81°F27°C | 7 mph11 km/h from Southwest | Clear | Clear |
| June 24 | 56°F13°C | 82°F28°C | 7 mph11 km/h from Southwest | Clear | Clear |
| June 25 | 59°F15°C | 86°F30°C | 7 mph11 km/h from Southwest | Clear | Clear |
| June 26 | 62°F16°C | 87°F30°C | 7 mph11 km/h from Southwest | Clear | Clear |
| June 27 | 62°F17°C | 85°F30°C | 6 mph10 km/h from Southwest | Clear | Clear |
Yes
Low of 55°F13°C, High of 82°F28°CWind: 7 mph11 km/h
Precipitation: None