Climate almanac
Rancho Cucamonga
California, US · 34.11°, -117.59°
What is the climate like in Rancho Cucamonga?
Rancho Cucamonga is warmest in August, when daily highs average 94°F (34°C), and coolest in January, when lows fall to about 44°F (6°C). The wettest month is typically January and the driest is July; the year sees roughly 20 in of precipitation.
- Warmest monthAugust — average high 94°F (34°C)
- Coolest monthJanuary — average low 44°F (6°C)
- Wettest monthJanuary (4.1 in)
- Driest monthJuly (0.0 in)
- Annual precipitation20 in