2025 Compare Climate & Weather:
Delta, CO vs Cortez, CO

Highlights

On average, there are 240 sunny days per year in Cortez. Delta averages 237 sunny days per year. The US average is 205 sunny days.

Cortez, Colorado gets 14.1 inches of rain, on average, per year. Delta, Colorado gets 9.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Cortez averages 48.9 inches of snow per year. Delta averages 23.1 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Cortez, Colorado
Summer High: the July high is around 89.5 degrees
Winter Low: the January low is 15.5
Rain: averages 14.1 inches of rain a year
Snow: averages 48.9 inches of snow a year

Delta, Colorado
Summer High: the July high is around 91.5 degrees
Winter Low: the January low is 14.7
Rain: averages 9.2 inches of rain a year
Snow: averages 23.1 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Delta is 7.4 (10=best), which means it is one of the most pleasant places in Colorado.

Today's Weather - Delta, CO

56°F

Today's Weather - Cortez, CO

46°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Delta / Cortez

July is the hottest month for Delta with an average high temperature of 91.5°, which ranks it as one of the hottest places in Colorado. In Delta, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Delta are September, May and June.

July is the hottest month for Cortez with an average high temperature of 89.5°, which ranks it as warmer than most places in Colorado. In Cortez, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Cortez are September, May and June.

January has the coldest nighttime temperatures for Delta with an average of 14.7°. This is about average compared to other places in Colorado.

January has the coldest nighttime temperatures for Cortez with an average of 15.5°. This is warmer than most places in Colorado.

In Delta, there are 47.3 days annually when the high temperature is over 90°, which is hotter than most places in Colorado.

In Cortez, there are 28.4 days annually when the high temperature is over 90°, which is about average compared to other places in Colorado.

In Delta, there are 151.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Colorado.

In Cortez, there are 170.9 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Colorado.

In Delta, there are 2.9 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Colorado.

In Cortez, there are 3.5 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Colorado.

October is the wettest month in Delta with 1.3 inches of rain, and the driest month is January with 0.5 inches. The wettest season is Winter with 34% of yearly precipitation and 17% occurs in Spring, which is the driest season. The annual rainfall of 9.2 inches in Delta means that it is one of the driest places in Colorado.


September is the wettest month in Cortez with 1.7 inches of rain, and the driest month is June with 0.5 inches. The wettest season is Winter with 31% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 14.1 inches in Cortez means that it is drier than most places in Colorado.

August is the rainiest month in Delta with 7.0 days of rain, and June is the driest month with only 3.7 rainy days. There are 62.7 rainy days annually in Delta, which is less rainy than most places in Colorado. The rainiest season is Summer when it rains 28% of the time and the driest is Spring with only a 19% chance of a rainy day.

August is the rainiest month in Cortez with 9.6 days of rain, and June is the driest month with only 3.6 rainy days. There are 80.1 rainy days annually in Cortez, which is about average compared to other places in Colorado. The rainiest season is Autumn when it rains 26% of the time and the driest is Summer with only a 24% chance of a rainy day.

An annual snowfall of 23.1 inches in Delta means that it is one of the least snowy places in Colorado.

An annual snowfall of 48.9 inches in Cortez means that it is about average compared to other places in Colorado.

January is the snowiest month in Delta with 6.3 inches of snow, and 6 months of the year have significant snowfall.

January is the snowiest month in Cortez with 11.6 inches of snow, and 7 months of the year have significant snowfall.