No
you don't need a jacket based on the weather in Ontario, CA, USA 1 second ago
63°F17°C & Clear
Wind is 9 mph14 km/h from the SW, gusting to 16 mph25 km/h
| April 23 | ||||
| 10pm | 62°F17°C | 8 mph13 km/h SW | Mostly Clear | |
| 11pm | 60°F15°C | 7 mph12 km/h SW | Mostly Clear | |
| April 24 | ||||
| 12am | 58°F14°C | 6 mph10 km/h W | Mostly Clear | |
| 1am | 56°F13°C | 5 mph9 km/h W | Mostly Clear | |
| 2am | 55°F13°C | 4 mph6 km/h W | Mostly Clear | |
| 3am | 54°F12°C | 3 mph5 km/h W | Mostly Clear | |
| 4am | 53°F11°C | 3 mph4 km/h W | Mostly Clear | |
| 5am | 52°F11°C | 3 mph4 km/h W | Partly Cloudy | |
| 6am | 51°F11°C | 2 mph4 km/h W | Partly Cloudy | |
| 7am | 51°F11°C | 2 mph4 km/h W | Partly Cloudy | |
| 8am | 51°F11°C | 2 mph4 km/h W | Mostly Cloudy | |
| 9am | 51°F10°C | 2 mph4 km/h W | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 23 | 54°F12°C | 66°F19°C | 6 mph10 km/h from SW | Partly Cloudy | Partly Cloudy |
| April 24 | 51°F10°C | 65°F19°C | 7 mph12 km/h from SW | Partly Cloudy | Cloudy |
| April 25 | 51°F11°C | 61°F16°C | 7 mph12 km/h from SW | Mostly Cloudy | Cloudy |
| April 26 | 51°F10°C | 64°F18°C | 7 mph12 km/h from SW | Mostly Cloudy | Partly Cloudy |
| April 27 | 51°F10°C | 69°F20°C | 6 mph10 km/h from SW | Mostly Clear | Clear |
| April 28 | 52°F11°C | 73°F23°C | 6 mph9 km/h from SW | Clear | Clear |
| April 29 | 56°F13°C | 80°F27°C | 5 mph9 km/h from W | Clear | Mostly Clear |
Yes
Low of 51°F11°C, High of 65°F19°CWind: 7 mph12 km/h
Precipitation: None