2025 Compare Climate & Weather:
Plano, TX vs Chantilly, VA

Highlights

On average, there are 197 sunny days per year in Chantilly. Plano averages 229 sunny days per year. The US average is 205 sunny days.

Chantilly, Virginia gets 42.9 inches of rain, on average, per year. Plano, Texas gets 40.9 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Chantilly averages 21.5 inches of snow per year. Plano averages 1.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Chantilly, Virginia
Summer High: the July high is around 85.8 degrees
Winter Low: the January low is 23.5
Rain: averages 42.9 inches of rain a year
Snow: averages 21.5 inches of snow a year

Plano, Texas
Summer High: the July high is around 93.6 degrees
Winter Low: the January low is 32.5
Rain: averages 40.9 inches of rain a year
Snow: averages 1.5 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Chantilly is 7.3 (10=best), which means it is about average compared to other places in Virginia.

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

Today's Weather - Plano, TX

73°F

Today's Weather - Chantilly, VA

79°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Plano / Chantilly

August is the hottest month for Plano with an average high temperature of 94.6°, which ranks it as cooler than most places in Texas. In Plano, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Plano are October, May and April.

July is the hottest month for Chantilly with an average high temperature of 85.8°, which ranks it as cooler than most places in Virginia. In Chantilly, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Chantilly are September, June and May.

January has the coldest nighttime temperatures for Plano with an average of 32.5°. This is colder than most places in Texas.

January has the coldest nighttime temperatures for Chantilly with an average of 23.5°. This is colder than most places in Virginia.

In Plano, there are 75.7 days annually when the high temperature is over 90°, which is cooler than most places in Texas.

In Chantilly, there are 19.0 days annually when the high temperature is over 90°, which is cooler than most places in Virginia.

In Plano, there are 45.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Texas.

In Chantilly, there are 103.9 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Virginia.

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

May is the wettest month in Plano with 5.5 inches of rain, and the driest month is August with 2.1 inches. The wettest season is Summer with 31% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 40.9 inches in Plano means that it is wetter than most places in Texas.


May is the wettest month in Chantilly with 4.6 inches of rain, and the driest month is February with 2.8 inches. The wettest season is Summer with 28% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 42.9 inches in Chantilly means that it is drier than most places in Virginia.

May is the rainiest month in Plano with 8.9 days of rain, and August is the driest month with only 4.7 rainy days. There are 80.2 rainy days annually in Plano, 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.

May is the rainiest month in Chantilly with 12.2 days of rain, and October is the driest month with only 8.1 rainy days. There are 119.5 rainy days annually in Chantilly, 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 22% chance of a rainy day.

An annual snowfall of 1.5 inches in Plano means that it is snowier than most places in Texas.

An annual snowfall of 21.5 inches in Chantilly means that it is one of the snowiest places in Virginia.

February is the snowiest month in Plano with 0.6 inches of snow, and 1 month of the year have significant snowfall.

February is the snowiest month in Chantilly with 7.8 inches of snow, and 5 months of the year have significant snowfall.