No
you don't need a jacket based on the weather in Ontario, CA 91761, USA 1 second ago
90°F32°C & Clear
Wind is 5 mph8 km/h from the Southwest, gusting to 8 mph13 km/h
| September 5 | ||||
| 3pm | 91°F33°C | 6 mph9 km/h Southwest | Clear | |
| 4pm | 94°F34°C | 9 mph14 km/h West | Clear | |
| 5pm | 96°F35°C | 10 mph17 km/h West | Clear | |
| 6pm | 95°F35°C | 12 mph20 km/h West | Clear | |
| 7pm | 94°F35°C | 12 mph20 km/h West | Clear | |
| 8pm | 92°F33°C | 12 mph19 km/h West | Clear | |
| 9pm | 88°F31°C | 11 mph17 km/h West | Clear | |
| 10pm | 84°F29°C | 8 mph13 km/h West | Clear | |
| 11pm | 81°F27°C | 6 mph9 km/h West | Clear | |
| September 6 | ||||
| 12am | 78°F25°C | 3 mph4 km/h West | Clear | |
| 1am | 75°F24°C | 2 mph3 km/h West | Clear | |
| 2am | 73°F23°C | 3 mph4 km/h West | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 5 | 66°F19°C | 96°F35°C | 7 mph12 km/h from West | Clear | Clear |
| September 6 | 66°F19°C | 93°F34°C | 6 mph10 km/h from West | Clear | Clear |
| September 7 | 67°F20°C | 94°F34°C | 6 mph10 km/h from Southwest | Clear | Clear |
| September 8 | 64°F18°C | 90°F32°C | 6 mph10 km/h from Southwest | Clear | Clear |
| September 9 | 62°F17°C | 84°F29°C | 6 mph10 km/h from Southwest | Clear | Mostly Clear |
| September 10 | 62°F17°C | 79°F26°C | 6 mph9 km/h from Southwest | Mostly Clear | Mostly Clear |
| September 11 | 60°F16°C | 82°F28°C | 6 mph10 km/h from Southwest | Mostly Clear | Clear |
No
Low of 66°F19°C, High of 93°F34°CWind: 6 mph10 km/h
Precipitation: None