Climate in Grand Junction, CO

Grand Junction, CO has a semi-arid climate, with hot summers and generally mild winters. During the summer months temperatures typically reach into the 90s Fahrenheit during the day, while evenings tend to remain comfortable and cool. Winters are usually mild, but snow does occur and temperatures can cool down to freezing averages. Spring and fall tend to be transitional seasons with moderate temperatures. The area receives around nine inches of precipitation per year with most of it falling from April through August.

Grand Junction, Colorado gets 10 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Grand Junction averages 16 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 245 sunny days per year in Grand Junction. The US average is 205 sunny days.

Grand Junction gets some kind of precipitation, on average, 69 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

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Weather Highlights

Summer High: the July high is around 93 degrees
Winter Low: the January low is 18
Rain: averages 10 inches of rain a year
Snow: averages 16 inches of snow a year

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BESTPLACES COMFORT INDEX

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

September, May and June are the most pleasant months in Grand Junction, while January and December are the least comfortable months.

July is the hottest month for Grand Junction with an average high temperature of 92.8°, which ranks it as one of the hottest places in Colorado. In Grand Junction, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Grand Junction are May, September and June.

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In Grand Junction, there are 54.9 days annually when the high temperature is over 90°, which is one of the hottest places in Colorado.

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January has the coldest nighttime temperatures for Grand Junction with an average of 17.8°. This is warmer than most places in Colorado.

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In Grand Junction, there are 130.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Colorado.

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In Grand Junction, there are 2.1 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Colorado.

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Humidity is low in Grand Junction, and some people might find the dryness to be uncomfortable. Days with noticeable humidity are rare throughout the year. A very dry climate can lead to cracked, itchy skin and dry eyes.

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September is the wettest month in Grand Junction with 1.2 inches of rain, and the driest month is January with 0.5 inches. The wettest season is Winter with 32% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 9.9 inches in Grand Junction means that it is one of the driest places in Colorado.

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April is the rainiest month in Grand Junction with 6.9 days of rain, and June is the driest month with only 3.8 rainy days. There are 68.9 rainy days annually in Grand Junction, 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 22% chance of a rainy day.

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An annual snowfall of 15.8 inches in Grand Junction means that it is one of the least snowy places in Colorado. December is the snowiest month in Grand Junction with 4.3 inches of snow, and 6 months of the year have significant snowfall.

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