Average temperature in Rancho Cucamonga (CA)
The mean minimum and maximum temperatures over the year in Rancho Cucamonga (California), the United States of America.
- Hot season / summer is in June, July, August and September.
- On average, the warmest month is August with 34°C.
- On average, the coolest month is December with 18°C.
- The average annual maximum temperature is 26°C.
- The average annual minimum temperature is 12°C.
Forecast for Rancho Cucamonga (CA)
broken clouds and no rain
almost clear and chance of rain
almost clear and no rain