McCook County, SD Climate

McCook, SD County has a continental climate, which means that there are distinct seasons with hot summers and cold winters. During the summer months, temperatures often exceed 90 degrees Fahrenheit and can occasionally reach the high 90s. Winters in McCook are cold with temperatures typically hovering around 20-25 degrees Fahrenheit or lower. Precipitation is fairly evenly distributed throughout the year, but snowfall is generally more frequent in winter months. The area also experiences strong winds year-round due to its proximity to the Great Plains.

McCook County, South Dakota gets 27 inches of rain, on average, per year. The US average is 38 inches of rain per year.

McCook County averages 36 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 208 sunny days per year in McCook County. The US average is 205 sunny days.

McCook County gets some kind of precipitation, on average, 77 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 84 degrees
Winter Low: the January low is 7
Rain: averages 27 inches of rain a year
Snow: averages 36 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for McCook County is 6.8 (10=best), which means it is about average compared to other places in South Dakota.

9.2 Summer - 4.4 Winter

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

Climate	McCook, South Dakota	United States
	27.0 in.	38.1 in.
	36.2 in.	27.8 in.
	76.8 days	106.2 days
	208 days	205 days
	84.3°	85.8°
	6.8°	21.7°
	6.8	7
	3.5	4.3
	1512 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 McCook County with an average high temperature of 84.3°, which ranks it as about average compared to other places in South Dakota. In McCook County, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for McCook County are June, August and September.

In McCook County, there are 12.3 days annually when the high temperature is over 90°, which is cooler than most places in South Dakota.

January has the coldest nighttime temperatures for McCook County with an average of 6.8°. This is about average compared to other places in South Dakota.

In McCook County, there are 161.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in South Dakota.

In McCook County, there are 23.4 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in South Dakota.

The humidity is usually comfortable in McCook County but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. The most humid months are July, August and June.

June is the wettest month in McCook County with 4.3 inches of rain, and the driest month is February with 0.6 inches. The wettest season is Autumn with 40% of yearly precipitation and 7% occurs in Spring, which is the driest season. The annual rainfall of 27.0 inches in McCook County means that it is one of the wettest places in South Dakota.

May is the rainiest month in McCook County with 9.8 days of rain, and February is the driest month with only 3.8 rainy days. There are 76.8 rainy days annually in McCook County, which is less rainy than most places in South Dakota. The rainiest season is Autumn when it rains 32% of the time and the driest is Spring with only a 15% chance of a rainy day.

An annual snowfall of 36.2 inches in McCook County means that it is less snowy than most places in South Dakota. December is the snowiest month in McCook County with 7.1 inches of snow, and 7 months of the year have significant snowfall.

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