Rancho Cucamonga (CA) Weather and Climate: A Comprehensive Guide
The temperature in Rancho Cucamonga can vary quite a bit throughout the year.
Temperatures can be very warm during the warmest months,
and pleasant during the cooler months.
It typically sees modest rainfall throughout the year.
Let's now guide you through the climate details for a complete overview.
Average maximum day and minimum night temperature
Visitors to Rancho Cucamonga can expect significant temperature changes throughout the year. Average daytime temperatures reach a very warm 34°C in August. In December, the coolest month of the year, temperatures drop to a pleasant 18°C.
At night, you can expect cooler temperatures, with averages dropping to around 6°C during this month. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Rancho Cucamonga typically sees modest rainfall throughout the year, with an average annual precipitation of 318 mm. Rancho Cucamonga can be quite wet during December, receiving approximately 98 mm of precipitation over 8 rainy days. In contrast June, experiences much drier conditions, with 0.2 mm of rainfall, spread across 0 rainy days. For more details, please visit our Rancho Cucamonga Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
Rancho Cucamonga can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 12.3 hours of sunshine daily. In contrast, the city experiences much darker days in January, with only 6.6 hours of sunlight per day. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
almost clear and no rain partly cloudy and chance of rain almost clear and no rainForecast for Rancho Cucamonga (CA)
3 m/s
4 m/s
3 m/s
The best time of year to visit Rancho Cucamonga in the United States of America
During the months of February, March, April, May and November you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
Yes, the months of May, June, July, August, September and October are very dry.
August has an average maximum temperature of 34°C and is the warmest month of the year.
The coldest month is December with an average maximum temperature of 18°C.
December tops the wettest month list with 98 mm of rainfall.
June is the driest month with 0 mm of precipitation.
July is the sunniest month with an average of 369 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
