2025 Compare Climate & Weather:
Boise City, ID vs Cortez, CO

Highlights

On average, there are 240 sunny days per year in Cortez. Boise City averages 206 sunny days per year. The US average is 205 sunny days.

Cortez, Colorado gets 14.1 inches of rain, on average, per year. Boise City, Idaho gets 13 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. Boise City averages 17.5 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

Boise City, Idaho
Summer High: the July high is around 91.6 degrees
Winter Low: the January low is 23.7
Rain: averages 13 inches of rain a year
Snow: averages 17.5 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 Boise is 7.3 (10=best), which means it is one of the most pleasant places in Idaho.

Today's Weather - Boise City, ID

46°F

Today's Weather - Cortez, CO

38°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Boise City / Cortez

July is the hottest month for Boise with an average high temperature of 91.6°, which ranks it as one of the hottest places in Idaho. In Boise, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Boise are September, June and May.

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.

December has the coldest nighttime temperatures for Boise with an average of 22.7°. This is warmer than most places in Idaho.

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

In Boise, there are 51.0 days annually when the high temperature is over 90°, which is one of the hottest places in Idaho.

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 Boise, there are 114.9 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Idaho.

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 Boise, there are 2.8 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Idaho.

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.

December is the wettest month in Boise with 1.9 inches of rain, and the driest month is July with 0.3 inches. The wettest season is Spring with 35% of yearly precipitation and 10% occurs in Autumn, which is the driest season. The annual rainfall of 13.0 inches in Boise means that it is about average compared to other places in Idaho.


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.

December is the rainiest month in Boise with 11.3 days of rain, and August is the driest month with only 2.3 rainy days. There are 87.0 rainy days annually in Boise, which is less rainy than most places in Idaho. The rainiest season is Spring when it rains 35% of the time and the driest is Autumn with only a 12% 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 17.5 inches in Boise means that it is less snowy than most places in Idaho.

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

December is the snowiest month in Boise with 6.4 inches of snow, and 5 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.