Climate almanac
Rancho Cucamonga
California, United States · 34.11°, -117.59°
What is the weather like in Rancho Cucamonga in May?
In May, Rancho Cucamonga is typically 77°F (25°C) during the day and 55°F (13°C) at night. The month brings about 0.7 in (19 mm) of precipitation in total.
- Average high77°F (25°C)
- Average low55°F (13°C)
- Precipitation0.7 in (19 mm)
- Clear or mostly clear days15
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)