2024 Compare Climate & Weather:
Ontario, CA vs Rancho Cucamonga, CA
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Highlights
On average, there are 287 sunny days per year in Rancho Cucamonga. Ontario averages 279 sunny days per year. The US average is 205 sunny days.
Rancho Cucamonga, California gets 19.1 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.
Rancho Cucamonga 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
Rancho Cucamonga, California
Summer High: the July high is around 92.9 degrees
Winter Low: the January low is 42.7
Rain: averages 19.1 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
Rancho CucamongaThe annual BestPlaces Comfort Index for Rancho Cucamonga is 8.7 (10=best), which means it is more comfortable than most places in California.
8.7 / 10
May, October and June are the most pleasant months in Rancho Cucamonga, while August and July are the least comfortable months.
OntarioThe annual BestPlaces Comfort Index for Ontario is 8.8 (10=best), which means it is more comfortable than most places in California.
8.8 / 10
May, June and October are the most pleasant months in Ontario, while August and July are the least comfortable months.
Today's Weather - Ontario, CA
11 PM PST
Mostly Clear
65°F
DAY | DESCRIPTION | HIGH / LOW | WIND |
---|
Tonight | Mostly Clear | 59° / 85° | W 5 mph |
Wednesday Night | Partly Cloudy then Patchy Fog | 60° / 86° | W 0 to 15 mph |
Thursday Night | Partly Cloudy then Patchy Fog | 61° / 91° | W 0 to 15 mph |
Friday Night | Mostly Clear | 64° / 97° | W 0 to 10 mph |
Saturday Night | Clear | 69° / 96° | NW 0 to 10 mph |
Sunday Night | Mostly Clear | 68° / 93° | W 0 to 10 mph |
Monday Night | Mostly Clear | 66° / 92° | SW 0 to 10 mph |
Today's Weather - Rancho Cucamonga, CA
11 PM PST
Mostly Clear
64°F
DAY | DESCRIPTION | HIGH / LOW | WIND |
---|
Tonight | Mostly Clear | 58° / 85° | W 5 mph |
Wednesday Night | Partly Cloudy then Patchy Fog | 59° / 86° | W 0 to 15 mph |
Thursday Night | Mostly Clear then Patchy Fog | 60° / 91° | W 0 to 10 mph |
Friday Night | Mostly Clear | 64° / 96° | NW 0 to 10 mph |
Saturday Night | Clear | 68° / 95° | W 0 to 10 mph |
Sunday Night | Mostly Clear | 67° / 92° | SW 0 to 10 mph |
Monday Night | Mostly Clear | 65° / 91° | SW 0 to 10 mph |
Average Monthly High / Low (°F)
Month | Ontario, CA | Rancho Cucamonga, CA |
---|
January | 67° / 43° | 67° / 43° |
February | 67° / 44° | 67° / 44° |
March | 70° / 46° | 71° / 46° |
April | 75° / 49° | 76° / 49° |
May | 79° / 54° | 80° / 54° |
June | 85° / 58° | 86° / 58° |
July | 92° / 62° | 93° / 63° |
August | 93° / 63° | 94° / 63° |
September | 90° / 60° | 90° / 61° |
October | 81° / 54° | 82° / 54° |
November | 73° / 46° | 73° / 46° |
December | 67° / 41° | 67° / 42° |
Hot, Freezing, Rainy, Snowy Days: Ontario / Rancho Cucamonga
Month | Hot Days | Freezing Days | Rainy Days | Snowy Days |
---|
January | 0 / 0 | 1 / 1 | 5 / 6 | 0 / 0 |
February | 0 / 0 | 0 / 0 | 6 / 6 | 0 / 0 |
March | 0 / 1 | 0 / 0 | 5 / 6 | 0 / 0 |
April | 2 / 2 | 0 / 0 | 3 / 3 | 0 / 0 |
May | 4 / 5 | 0 / 0 | 1 / 2 | 0 / 0 |
June | 8 / 11 | 0 / 0 | 1 / 1 | 0 / 0 |
July | 20 / 21 | 0 / 0 | 0 / 0 | 0 / 0 |
August | 22 / 23 | 0 / 0 | 0 / 1 | 0 / 0 |
September | 16 / 16 | 0 / 0 | 1 / 1 | 0 / 0 |
October | 6 / 7 | 0 / 0 | 2 / 3 | 0 / 0 |
November | 1 / 1 | 0 / 0 | 3 / 3 | 0 / 0 |
December | 0 / 0 | 2 / 1 | 4 / 5 | 0 / 0 |
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 Rancho Cucamonga with an average high temperature of 94.2°, which ranks it as warmer than most places in California. In Rancho Cucamonga, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Rancho Cucamonga are May, April and October.
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 Rancho Cucamonga with an average of 41.8°. This is warmer than most 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 Rancho Cucamonga, there are 86.4 days annually when the high temperature is over 90°, which is hotter than most 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 Rancho Cucamonga, there are 2.5 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 Rancho Cucamonga, 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 Rancho Cucamonga with 4.6 inches of rain, and the driest month is July with 0.0 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 19.1 inches in Rancho Cucamonga means that it is about average compared to other 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 Rancho Cucamonga with 6.4 days of rain, and July is the driest month with only 0.4 rainy days. There are 35.9 rainy days annually in Rancho Cucamonga, 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 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 Rancho Cucamonga, 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 Rancho Cucamonga.
DID YOU KNOW?
Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.
Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.
Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.
Reviews for Ontario
2 Reviews
Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't More
Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but More
Start Your Review of Ontario
Reviews for Rancho Cucamonga
2 Reviews
Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't More
Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but More
Start Your Review of Rancho Cucamonga
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