Normally weather temperatures in Rancho Cucamonga throughout August is 22. Average highs are typically 31 with low daily temperautes being 16.
| Month | Degrees Celsius |
|---|---|
| Temperature | 22 |
| High Temperature | 31 |
| Low Temperature | 16 |
| Sunshine Per Day | 10 |
Useful Links: Rancho Cucamonga Weather: Average Weather & Yearly Climate