2025 Compare Climate & Weather:
Rock Hill, SC vs Santa Clarita, CA

Highlights

On average, there are 280 sunny days per year in Santa Clarita. Rock Hill averages 212 sunny days per year. The US average is 205 sunny days.

Santa Clarita, California gets 18.4 inches of rain, on average, per year. Rock Hill, South Carolina gets 43.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Santa Clarita averages 0 inches of snow per year. Rock Hill averages 2.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Santa Clarita, California
Summer High: the July high is around 89.3 degrees
Winter Low: the January low is 46.2
Rain: averages 18.4 inches of rain a year
Snow: averages 0 inches of snow a year

Rock Hill, South Carolina
Summer High: the July high is around 90.8 degrees
Winter Low: the January low is 30.5
Rain: averages 43.8 inches of rain a year
Snow: averages 2.6 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Rock Hill is 7.5 (10=best), which means it is one of the most pleasant places in South Carolina.

Today's Weather - Rock Hill, SC

79°F

Today's Weather - Santa Clarita, CA

63°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Rock Hill / Santa Clarita

July is the hottest month for Rock Hill with an average high temperature of 90.8°, which ranks it as cooler than most places in South Carolina. In Rock Hill, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Rock Hill are May, April and September.

August is the hottest month for Santa Clarita with an average high temperature of 91.0°, which ranks it as about average compared to other places in California. In Santa Clarita, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Santa Clarita are May, October and June.

January has the coldest nighttime temperatures for Rock Hill with an average of 30.5°. This is colder than most places in South Carolina.

December has the coldest nighttime temperatures for Santa Clarita with an average of 45.8°. This is one of the warmest places in California.

In Rock Hill, there are 49.5 days annually when the high temperature is over 90°, which is cooler than most places in South Carolina.

In Santa Clarita, there are 60.6 days annually when the high temperature is over 90°, which is about average compared to other places in California.

In Rock Hill, there are 59.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in South Carolina.

In Santa Clarita, there are 1.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

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

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

August is the wettest month in Rock Hill with 4.2 inches of rain, and the driest month is May with 3.0 inches. The wettest season is Autumn with 28% of yearly precipitation and 24% occurs in Summer, which is the driest season. The annual rainfall of 43.8 inches in Rock Hill means that it is one of the driest places in South Carolina.


February is the wettest month in Santa Clarita with 4.4 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 18.4 inches in Santa Clarita means that it is about average compared to other places in California.

March is the rainiest month in Rock Hill with 9.1 days of rain, and September is the driest month with only 6.3 rainy days. There are 99.3 rainy days annually in Rock Hill, which is less rainy than most places in South Carolina. The rainiest season is Autumn when it rains 27% of the time and the driest is Winter with only a 21% chance of a rainy day.

February is the rainiest month in Santa Clarita with 6.3 days of rain, and July is the driest month with only 0.3 rainy days. There are 34.1 rainy days annually in Santa Clarita, 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.

An annual snowfall of 2.6 inches in Rock Hill means that it is one of the snowiest places in South Carolina.

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

January is the snowiest month in Rock Hill with 1.1 inches of snow, and 2 months of the year have significant snowfall.

Any measurable snowfall is a rare occurance in Santa Clarita.