No
you don't need a jacket based on the weather in Ontario, CA 91761, USA 1 second ago
70°F21°C & Partly Cloudy
Wind is 1 mph2 km/h from the South, gusting to 2 mph3 km/h
| October 10 | ||||
| 12pm | 72°F22°C | 2 mph3 km/h Southeast | Mostly Clear | |
| 1pm | 77°F25°C | 2 mph3 km/h South | Mostly Clear | |
| 2pm | 81°F27°C | 3 mph5 km/h South | Partly Cloudy | |
| 3pm | 82°F28°C | 2 mph4 km/h South | Mostly Cloudy | |
| 4pm | 86°F30°C | 4 mph6 km/h Southwest | Mostly Cloudy | |
| 5pm | 87°F30°C | 7 mph11 km/h Southwest | Mostly Cloudy | |
| 6pm | 89°F31°C | 8 mph13 km/h Southwest | Mostly Clear | |
| 7pm | 87°F30°C | 7 mph12 km/h Southwest | Mostly Clear | |
| 8pm | 83°F28°C | 9 mph14 km/h Southwest | Partly Cloudy | |
| 9pm | 80°F27°C | 7 mph11 km/h West | Partly Cloudy | |
| 10pm | 77°F25°C | 5 mph8 km/h West | Mostly Clear | |
| 11pm | 75°F24°C | 4 mph6 km/h West | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| October 10 | 65°F18°C | 89°F31°C | 5 mph7 km/h from Southwest | Partly Cloudy | Mostly Clear |
| October 11 | 63°F17°C | 80°F27°C | 6 mph9 km/h from West | Clear | Clear |
| October 12 | 56°F13°C | 79°F26°C | 5 mph7 km/h from West | Clear | Clear |
| October 13 | 55°F13°C | 72°F22°C | 5 mph9 km/h from Southwest | Mostly Clear | Partly Cloudy |
| October 14 | 54°F12°C | 67°F19°C | 5 mph8 km/h from Southwest | Drizzle | Rain |
| October 15 | 54°F12°C | 67°F19°C | 5 mph8 km/h from Southwest | Mostly Clear | Mostly Clear |
| October 16 | 51°F11°C | 69°F21°C | 3 mph5 km/h from Southwest | Clear | Clear |
No
Low of 64°F18°C, High of 81°F27°CWind: 6 mph9 km/h
Precipitation: None