Ontario climate guide, California
Welcome to the Ontario climate guide, which shows average weather for Ontario, California, United States. Check maximum temperature, the number of days with rainfall and daily hours of sunshine for each month of the year.
Ontario climate guide: quick links
Maximum temperature (°C) in Ontario
Days with some rain in Ontario
Hours of sunshine in Ontario
The Ontario climate guide is provided by Weather2Travel.com. For more information about the weather in Ontario, California, United States including monthly rainfall, mininum temperature, UV maximum, heat & humidity and daylight hours visit the California climate guide page.