Arapahoe County, CO Climate

Arapahoe County, Colorado has a semi-arid continental climate. It typically experiences hot and dry summers, with temperatures ranging from the mid-80s to mid-90s, and cold winters with temperatures falling into the 20s and 30s. The area receives generally low amounts of rainfall each year, typically averaging between 13 and 16 inches. However, it does receive snowfall in the winter months, usually around 20 inches of snowfall annually. Arapahoe County also experiences occasional thunderstorms which can bring heavy rains and localized flooding.

Arapahoe County, Colorado gets 17 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Arapahoe County averages 63 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 Arapahoe County. The US average is 205 sunny days.

Arapahoe County gets some kind of precipitation, on average, 81 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.

Weather Highlights

Summer High: the July high is around 88 degrees
Winter Low: the January low is 18
Rain: averages 17 inches of rain a year
Snow: averages 63 inches of snow a year

Bestplaces Comfort Index

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

8.9 Summer - 5.5 Winter

September, August and June are the most pleasant months in Arapahoe County, while December and January are the least comfortable months.

Climate	Arapahoe, Colorado	United States
	17.1 in.	38.1 in.
	62.8 in.	27.8 in.
	80.7 days	106.2 days
	245 days	205 days
	88.0°	85.8°
	17.7°	21.7°
	7.2	7
	5.2	4.3
	5448 ft.	2443 ft.

Climate

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Arapahoe County with an average high temperature of 88.0°, which ranks it as about average compared to other places in Colorado. In Arapahoe County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Arapahoe County are September, June and August.

In Arapahoe County, there are 29.1 days annually when the high temperature is over 90°, which is about average compared to other places in Colorado.

December has the coldest nighttime temperatures for Arapahoe County with an average of 16.8°. This is warmer than most places in Colorado.

In Arapahoe County, there are 156.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Colorado.

In Arapahoe County, there are 6.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Colorado.

Humidity is low in Arapahoe County, 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.

May is the wettest month in Arapahoe County with 2.4 inches of rain, and the driest month is January with 0.5 inches. The wettest season is Autumn with 37% of yearly precipitation and 10% occurs in Spring, which is the driest season. The annual rainfall of 17.1 inches in Arapahoe County means that it is about average compared to other places in Colorado.

May is the rainiest month in Arapahoe County with 9.6 days of rain, and January is the driest month with only 4.3 rainy days. There are 80.7 rainy days annually in Arapahoe County, which is about average compared to other places in Colorado. The rainiest season is Autumn when it rains 32% of the time and the driest is Spring with only a 17% chance of a rainy day.

An annual snowfall of 62.8 inches in Arapahoe County means that it is about average compared to other places in Colorado. March is the snowiest month in Arapahoe County with 12.4 inches of snow, and 9 months of the year have significant snowfall.

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