2025 Compare Climate & Weather:
San Dimas, CA vs Ramona, CA

Highlights

On average, there are 263 sunny days per year in Ramona. San Dimas averages 277 sunny days per year. The US average is 205 sunny days.

Ramona, California gets 16 inches of rain, on average, per year. San Dimas, California gets 19.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Ramona averages 0 inches of snow per year. San Dimas averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Ramona, California
Summer High: the July high is around 88.3 degrees
Winter Low: the January low is 38.4
Rain: averages 16 inches of rain a year
Snow: averages 0 inches of snow a year

San Dimas, California
Summer High: the July high is around 90.7 degrees
Winter Low: the January low is 44.7
Rain: averages 19.4 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for San Dimas is 8.9 (10=best), which means it is more comfortable than most places in California.

Today's Weather - San Dimas, CA

60°F

Today's Weather - Ramona, CA

55°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: San Dimas / Ramona

August is the hottest month for San Dimas with an average high temperature of 92.2°, which ranks it as about average compared to other places in California. In San Dimas, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Dimas are May, April and October.

August is the hottest month for Ramona with an average high temperature of 89.9°, which ranks it as about average compared to other places in California. In Ramona, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Ramona are October, May and June.

December has the coldest nighttime temperatures for San Dimas with an average of 43.8°. This is warmer than most places in California.

December has the coldest nighttime temperatures for Ramona with an average of 37.4°. This is about average compared to other places in California.

In San Dimas, there are 70.0 days annually when the high temperature is over 90°, which is hotter than most places in California.

In Ramona, there are 51.4 days annually when the high temperature is over 90°, which is about average compared to other places in California.

In San Dimas, there are 1.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Ramona, there are 24.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in California.

In San Dimas, 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 Ramona, 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 San Dimas with 4.9 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 19.4 inches in San Dimas means that it is about average compared to other places in California.


February is the wettest month in Ramona with 3.3 inches of rain, and the driest month is June with 0.1 inches. The wettest season is Spring with 53% of yearly precipitation and 2% occurs in Autumn, which is the driest season. The annual rainfall of 16.0 inches in Ramona means that it is about average compared to other places in California.

February is the rainiest month in San Dimas with 5.9 days of rain, and July is the driest month with only 0.2 rainy days. There are 32.4 rainy days annually in San Dimas, which is less rainy than most places in California. The rainiest season is Spring when it rains 49% of the time and the driest is Autumn with only a 4% chance of a rainy day.

February is the rainiest month in Ramona with 7.2 days of rain, and August is the driest month with only 0.6 rainy days. There are 42.2 rainy days annually in Ramona, which is less rainy than most places in California. The rainiest season is Spring when it rains 45% of the time and the driest is Autumn with only a 5% chance of a rainy day.

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

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

Any measurable snowfall is a rare occurance in San Dimas.

Any measurable snowfall is a rare occurance in Ramona.