2025 Compare Climate & Weather:
Siloam Springs, AR vs Rock Hill, SC

Highlights

On average, there are 212 sunny days per year in Rock Hill. Siloam Springs averages 218 sunny days per year. The US average is 205 sunny days.

Rock Hill, South Carolina gets 43.8 inches of rain, on average, per year. Siloam Springs, Arkansas gets 47.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Rock Hill averages 2.6 inches of snow per year. Siloam Springs averages 10.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

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

Siloam Springs, Arkansas
Summer High: the July high is around 90.4 degrees
Winter Low: the January low is 26.4
Rain: averages 47.7 inches of rain a year
Snow: averages 10.6 inches of snow a year

BestPlaces Comfort Index

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.

The annual BestPlaces Comfort Index for Siloam Springs is 7.4 (10=best), which means it is one of the most pleasant places in Arkansas.

Today's Weather - Siloam Springs, AR

59°F

Today's Weather - Rock Hill, SC

64°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Siloam Springs / Rock Hill

August is the hottest month for Siloam Springs with an average high temperature of 90.9°, which ranks it as cooler than most places in Arkansas. In Siloam Springs, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Siloam Springs are May, September and October.

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.

January has the coldest nighttime temperatures for Siloam Springs with an average of 26.4°. This is colder than most places in Arkansas.

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

In Siloam Springs, there are 44.6 days annually when the high temperature is over 90°, which is cooler than most places in Arkansas.

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 Siloam Springs, there are 80.5 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Arkansas.

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 Siloam Springs, there are 0.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Arkansas.

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.

May is the wettest month in Siloam Springs with 5.6 inches of rain, and the driest month is January with 2.6 inches. The wettest season is Summer with 30% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 47.7 inches in Siloam Springs means that it is drier than most places in Arkansas.


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.

May is the rainiest month in Siloam Springs with 10.1 days of rain, and January is the driest month with only 6.0 rainy days. There are 89.9 rainy days annually in Siloam Springs, which is less rainy than most places in Arkansas. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 22% chance of a rainy day.

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.

An annual snowfall of 10.6 inches in Siloam Springs means that it is one of the snowiest places in Arkansas.

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

January is the snowiest month in Siloam Springs with 3.2 inches of snow, and 4 months of the year have significant snowfall.

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