2025 Compare Climate & Weather:
Plano, TX vs Deerfield, IL

Highlights

On average, there are 192 sunny days per year in Deerfield. Plano averages 229 sunny days per year. The US average is 205 sunny days.

Deerfield, Illinois gets 36.3 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.

Deerfield averages 35.9 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

Deerfield, Illinois
Summer High: the July high is around 83.1 degrees
Winter Low: the January low is 16.7
Rain: averages 36.3 inches of rain a year
Snow: averages 35.9 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 Deerfield is 6.9 (10=best), which means it is less comfortable than most places in Illinois.

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

64°F

Today's Weather - Deerfield, IL

62°F

Average Monthly High / Low (°F)

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

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 Deerfield with an average high temperature of 83.1°, which ranks it as one of the coolest places in Illinois. In Deerfield, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Deerfield are June, September and August.

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 Deerfield with an average of 16.7°. This is about average compared to other places in Illinois.

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

In Deerfield, there are 13.8 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

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 Deerfield, there are 122.8 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Illinois.

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 Deerfield, there are 6.2 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Illinois.

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.


August is the wettest month in Deerfield with 4.3 inches of rain, and the driest month is February with 1.6 inches. The wettest season is Autumn with 32% of yearly precipitation and 15% occurs in Spring, which is the driest season. The annual rainfall of 36.3 inches in Deerfield means that it is one of the driest places in Illinois.

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.

April is the rainiest month in Deerfield with 12.2 days of rain, and February is the driest month with only 8.2 rainy days. There are 125.3 rainy days annually in Deerfield, which is one of the rainiest places in Illinois. The rainiest season is Summer when it rains 28% of the time and the driest is Spring with only a 23% 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 35.9 inches in Deerfield means that it is one of the snowiest places in Illinois.

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 Deerfield with 11.3 inches of snow, and 6 months of the year have significant snowfall.