Fontana, California 

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Climate in Fontana, California

Fontana, California gets 14 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Fontana averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 281 sunny days per year in Fontana. The US average is 205 sunny days.

Fontana gets some kind of precipitation, on average, 38 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 94 degrees
Winter Low: the January low is 43
Rain: averages 14 inches of rain a year
Snow: averages 0 inches of snow a year


The annual BestPlaces Comfort Index for Fontana is 8.7 (10=best), which means it is more comfortable than most places in California.

8.1 / 8.6

Summer   /   Winter
May, October and April are the most pleasant months in Fontana, while August and July are the least comfortable months.

Climate Averages
  Fontana, CaliforniaUnited States
  14.0 in.38.1 in.
  0.0 in.27.8 in.
  38.4 days106.2 days
  281 days205 days
  1237 ft.2443 ft.


Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

August is the hottest month for Fontana with an average high temperature of 95.3°, which ranks it as warmer than most places in California. In Fontana, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Fontana are April, May and October.

In Fontana, there are 95.0 days annually when the high temperature is over 90°, which is hotter than most places in California.

December has the coldest nighttime temperatures for Fontana with an average of 41.6°. This is warmer than most places in California.

In Fontana, there are 2.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Fontana, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.

Humidity in Fontana is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are July, August and June.

February is the wettest month in Fontana with 3.3 inches of rain, and the driest month is June with 0.1 inches. The wettest season is Spring with 59% of yearly precipitation and 2% occurs in Autumn, which is the driest season. The annual rainfall of 14.0 inches in Fontana means that it is drier than most places in California.

February is the rainiest month in Fontana with 6.8 days of rain, and August is the driest month with only 0.5 rainy days. There are 38.4 rainy days annually in Fontana, which is less rainy than most places in California. The rainiest season is Spring when it rains 47% of the time and the driest is Autumn with only a 5% chance of a rainy day.

There is rarely any recorded snowfall in Fontana, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in Fontana.

  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Fontana    10 Reviews
    Fontana - 1/17/2018
    I bought a house in North Fontana 13 years ago and I was the worst thing I ever did Fontana is trash dirty Rundown graffiti everywhere broken down cars and OMG I'm sick... Read More

    Start Your Review of Fontana

    The quality of life Fontana offers is excellent - 6/13/2016
    I was born and raised here and I used to love it, but now I am moving out of it. The truth is that the climate is becoming way too hot. Sure, Fontana has always been... Read More

    1950's - 8/7/2010
    best cop ever, james chick payne!most well built sr. citizen, John Yarros. all gone but not... Read More

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