2025 Compare Climate & Weather:
Round Rock, TX vs Cary, NC

Highlights

On average, there are 213 sunny days per year in Cary. Round Rock averages 232 sunny days per year. The US average is 205 sunny days.

Cary, North Carolina gets 46.3 inches of rain, on average, per year. Round Rock, Texas gets 36 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Cary averages 4.1 inches of snow per year. Round Rock averages 0.2 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Cary, North Carolina
Summer High: the July high is around 89.1 degrees
Winter Low: the January low is 29.9
Rain: averages 46.3 inches of rain a year
Snow: averages 4.1 inches of snow a year

Round Rock, Texas
Summer High: the July high is around 95 degrees
Winter Low: the January low is 38
Rain: averages 36 inches of rain a year
Snow: averages 0.2 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Cary is 7.5 (10=best), which means it is more comfortable than most places in North Carolina.

The annual BestPlaces Comfort Index for Round Rock is 7.2 (10=best), which means it is more comfortable than most places in Texas.

Today's Weather - Round Rock, TX

82°F

Today's Weather - Cary, NC

68°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Round Rock / Cary

August is the hottest month for Round Rock with an average high temperature of 96.3°, which ranks it as warmer than most places in Texas. In Round Rock, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Round Rock are April, October and March.

July is the hottest month for Cary with an average high temperature of 89.1°, which ranks it as about average compared to other places in North Carolina. In Cary, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Cary are May, September and October.

January has the coldest nighttime temperatures for Round Rock with an average of 38.0°. This is about average compared to other places in Texas.

January has the coldest nighttime temperatures for Cary with an average of 29.9°. This is about average compared to other places in North Carolina.

In Round Rock, there are 104.7 days annually when the high temperature is over 90°, which is hotter than most places in Texas.

In Cary, there are 37.0 days annually when the high temperature is over 90°, which is about average compared to other places in North Carolina.

In Round Rock, there are 22.7 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Texas.

In Cary, there are 65.6 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in North Carolina.

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

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

June is the wettest month in Round Rock with 4.6 inches of rain, and the driest month is January with 2.2 inches. The wettest season is Winter with 28% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 36.0 inches in Round Rock means that it is about average compared to other places in Texas.


August is the wettest month in Cary with 4.7 inches of rain, and the driest month is April with 3.1 inches. The wettest season is Autumn with 30% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 46.3 inches in Cary means that it is drier than most places in North Carolina.

March is the rainiest month in Round Rock with 8.3 days of rain, and August is the driest month with only 4.4 rainy days. There are 78.4 rainy days annually in Round Rock, which is rainier than most places in Texas. The rainiest season is Summer when it rains 29% of the time and the driest is Autumn with only a 21% chance of a rainy day.

July is the rainiest month in Cary with 10.8 days of rain, and October is the driest month with only 6.9 rainy days. There are 107.1 rainy days annually in Cary, which is less rainy than most places in North Carolina. The rainiest season is Autumn when it rains 28% of the time and the driest is Winter with only a 21% chance of a rainy day.

An annual snowfall of 0.2 inches in Round Rock means that it is about average compared to other places in Texas.

An annual snowfall of 4.1 inches in Cary means that it is snowier than most places in North Carolina.

February is the snowiest month in Round Rock with 0.1 inches of snow, and no months of the year have significant snowfall.

January is the snowiest month in Cary with 2.2 inches of snow, and 3 months of the year have significant snowfall.