2025 Compare Climate & Weather:
Plano, TX vs Chattanooga, TN

Highlights

On average, there are 207 sunny days per year in Chattanooga. Plano averages 229 sunny days per year. The US average is 205 sunny days.

Chattanooga, Tennessee gets 51.1 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.

Chattanooga averages 1.5 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

Chattanooga, Tennessee
Summer High: the July high is around 89 degrees
Winter Low: the January low is 28.9
Rain: averages 51.1 inches of rain a year
Snow: averages 1.5 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 Chattanooga is 7.5 (10=best), which means it is one of the most pleasant places in Tennessee.

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

63°F

Today's Weather - Chattanooga, TN

58°F

Average Monthly High / Low (°F)

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

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 Chattanooga with an average high temperature of 89.0°, which ranks it as warmer than most places in Tennessee. In Chattanooga, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Chattanooga are May, September and October.

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 Chattanooga with an average of 28.9°. This is one of the warmest places in Tennessee.

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

In Chattanooga, there are 39.0 days annually when the high temperature is over 90°, which is hotter than most places in Tennessee.

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 Chattanooga, there are 71.4 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Tennessee.

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 Chattanooga, there are 0.1 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Tennessee.

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.


December is the wettest month in Chattanooga with 4.9 inches of rain, and the driest month is October with 3.2 inches. The wettest season is Spring with 29% of yearly precipitation and 23% occurs in Autumn, which is the driest season. The annual rainfall of 51.1 inches in Chattanooga means that it is drier than most places in Tennessee.

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.

December is the rainiest month in Chattanooga with 9.2 days of rain, and October is the driest month with only 6.3 rainy days. There are 99.0 rainy days annually in Chattanooga, which is one of the least rainy places in Tennessee. The rainiest season is Spring 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 1.5 inches in Plano means that it is snowier than most places in Texas.

An annual snowfall of 1.5 inches in Chattanooga means that it is one of the least snowy places in Tennessee.

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

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