2025 Compare Climate & Weather:
Merrimac, VA vs Rowlett, TX

Highlights

On average, there are 230 sunny days per year in Rowlett. Merrimac averages 216 sunny days per year. The US average is 205 sunny days.

Rowlett, Texas gets 40.4 inches of rain, on average, per year. Merrimac, Virginia gets 40.1 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Rowlett averages 0.8 inches of snow per year. Merrimac averages 23.7 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Rowlett, Texas
Summer High: the July high is around 94.7 degrees
Winter Low: the January low is 35
Rain: averages 40.4 inches of rain a year
Snow: averages 0.8 inches of snow a year

Merrimac, Virginia
Summer High: the July high is around 82.9 degrees
Winter Low: the January low is 21.7
Rain: averages 40.1 inches of rain a year
Snow: averages 23.7 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Rowlett is 7.1 (10=best), which means it is about average compared to other places in Texas.

The annual BestPlaces Comfort Index for Merrimac is 7.2 (10=best), which means it is less comfortable than most places in Virginia.

Today's Weather - Merrimac, VA

61°F

Today's Weather - Rowlett, TX

66°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Merrimac / Rowlett

July is the hottest month for Merrimac with an average high temperature of 82.9°, which ranks it as one of the coolest places in Virginia. In Merrimac, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Merrimac are June, September and August.

August is the hottest month for Rowlett with an average high temperature of 95.6°, which ranks it as about average compared to other places in Texas. In Rowlett, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Rowlett are October, April and May.

January has the coldest nighttime temperatures for Merrimac with an average of 21.7°. This is colder than most places in Virginia.

January has the coldest nighttime temperatures for Rowlett with an average of 35.0°. This is about average compared to other places in Texas.

In Merrimac, there are 6.9 days annually when the high temperature is over 90°, which is cooler than most places in Virginia.

In Rowlett, there are 88.3 days annually when the high temperature is over 90°, which is cooler than most places in Texas.

In Merrimac, there are 122.5 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Virginia.

In Rowlett, there are 31.0 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Texas.

In Merrimac, there are 0.6 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Virginia.

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

May is the wettest month in Merrimac with 4.4 inches of rain, and the driest month is October with 2.7 inches. The wettest season is Autumn with 29% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 40.1 inches in Merrimac means that it is one of the driest places in Virginia.


May is the wettest month in Rowlett with 5.0 inches of rain, and the driest month is August with 1.9 inches. The wettest season is Summer with 30% of yearly precipitation and 21% occurs in Autumn, which is the driest season. The annual rainfall of 40.4 inches in Rowlett means that it is wetter than most places in Texas.

May is the rainiest month in Merrimac with 12.7 days of rain, and September is the driest month with only 7.9 rainy days. There are 123.9 rainy days annually in Merrimac, which is rainier than most places in Virginia. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 21% chance of a rainy day.

May is the rainiest month in Rowlett with 9.2 days of rain, and July is the driest month with only 4.9 rainy days. There are 85.8 rainy days annually in Rowlett, 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.

An annual snowfall of 23.7 inches in Merrimac means that it is one of the snowiest places in Virginia.

An annual snowfall of 0.8 inches in Rowlett means that it is snowier than most places in Texas.

January is the snowiest month in Merrimac with 7.3 inches of snow, and 6 months of the year have significant snowfall.

February is the snowiest month in Rowlett with 0.3 inches of snow, and no months of the year have significant snowfall.