Rialto (CA) Climate by Month
Rialto experiences great temperature shifts.
The city's weather can transition from very warm days
to pleasant weather.
The city tends toward drier weather patterns.
Now, let’s explore all the climate details to give you a full picture.
Average day and night temperature
The climate in Rialto is known for significant temperature differences throughout the year, making the weather dynamic. Typically, daytime temperatures range from a very warm 35°C in August to a pleasant 18°C in the coolest month, December. Nights are cooler, with temperatures generally dropping to 6°C, particularly during the colder months.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Rialto has a relatively dry climate with low precipitation, averaging 291 mm of rainfall annually. The climate in Rialto shows significant variation throughout the year. Expect moderate rainfall in December, with an average of 86 mm of precipitation over 7 rainy days. In contrast, June offers drier and sunnier days, with around 0.1 mm of rainfall over 0 rainy days.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
For those who appreciate different seasons, Rialto serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 12.3 hours of sunshine daily, and embrace the darker days in January, offering only 6.6 hours of daily sunlight.Monthly hours of sunshine
Daily hours of sunshine
The best time of year to visit Rialto in the United States of America
During the months of February, March, April 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 35°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 86 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.
