Current conditions and the National Weather Service 7-day forecast for ZIP code 91761, Ontario, California — temperature, rain chance, wind, radar and alerts.
Saturday Aug 29 night: a low around 70°F. Sunday Aug 30: a high near 97°F and a low around 66°F. Highs over the period run 90°F to 97°F.
| Day | High | Low | Precip |
|---|---|---|---|
| Saturday Aug 29 | — | 70° | — |
| Sunday Aug 30 | 97° | 66° | — |
| Monday Aug 31 | 92° | 65° | — |
| Tuesday Sep 1 | 90° | 66° | — |
| Wednesday Sep 2 | 90° | 66° | — |
| Thursday Sep 3 | 92° | 65° | — |
| Friday Sep 4 | 94° | 67° | — |
| Saturday Sep 5 | 96° | — | — |