2025 Compare Climate & Weather:
Ontario, CA vs Los Angeles, CA

Highlights

On average, there are 284 sunny days per year in Los Angeles. Ontario averages 279 sunny days per year. The US average is 205 sunny days.

Los Angeles, California gets 15.5 inches of rain, on average, per year. Ontario, California gets 15.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Los Angeles averages 0 inches of snow per year. Ontario averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Los Angeles, California
Summer High: the July high is around 83.6 degrees
Winter Low: the January low is 45.9
Rain: averages 15.5 inches of rain a year
Snow: averages 0 inches of snow a year

Ontario, California
Summer High: the July high is around 91.9 degrees
Winter Low: the January low is 42.6
Rain: averages 15.7 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Los Angeles is 9.1 (10=best), which means it is one of the most pleasant places in California.

The annual BestPlaces Comfort Index for Ontario is 8.8 (10=best), which means it is more comfortable than most places in California.

Today's Weather - Ontario, CA

59°F

Today's Weather - Los Angeles, CA

60°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Ontario / Los Angeles

August is the hottest month for Ontario with an average high temperature of 93.4°, which ranks it as warmer than most places in California. In Ontario, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Ontario are May, October and April.

August is the hottest month for Los Angeles with an average high temperature of 85.0°, which ranks it as cooler than most places in California. In Los Angeles, there are 7 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Los Angeles are October, June and May.

December has the coldest nighttime temperatures for Ontario with an average of 41.4°. This is warmer than most places in California.

December has the coldest nighttime temperatures for Los Angeles with an average of 45.2°. This is one of the warmest places in California.

In Ontario, there are 79.5 days annually when the high temperature is over 90°, which is hotter than most places in California.

In Los Angeles, there are 37.3 days annually when the high temperature is over 90°, which is about average compared to other places in California.

In Ontario, there are 3.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Los Angeles, there are 2.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

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

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

February is the wettest month in Ontario with 3.8 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 60% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 15.7 inches in Ontario means that it is drier than most places in California.


February is the wettest month in Los Angeles with 3.9 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 61% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 15.5 inches in Los Angeles means that it is drier than most places in California.

February is the rainiest month in Ontario with 5.7 days of rain, and July is the driest month with only 0.2 rainy days. There are 30.5 rainy days annually in Ontario, which is one of the least rainy places in California. The rainiest season is Spring when it rains 50% of the time and the driest is Autumn with only a 4% chance of a rainy day.

February is the rainiest month in Los Angeles with 6.3 days of rain, and July is the driest month with only 0.3 rainy days. There are 33.7 rainy days annually in Los Angeles, which is less rainy than most places in California. The rainiest season is Spring when it rains 51% of the time and the driest is Autumn with only a 4% chance of a rainy day.

There is rarely any recorded snowfall in Ontario, ranking it as one of the least snowy places in California.

There is rarely any recorded snowfall in Los Angeles, ranking it as one of the least snowy places in California.

Any measurable snowfall is a rare occurance in Ontario.

Any measurable snowfall is a rare occurance in Los Angeles.