Big Sioux, SD Climate

Big Sioux, SD has a continental climate with four distinct seasons. Summers are warm and humid, with an average temperature of 75°F. The weather in the winter months is generally cold and dry, with an average temperature of 18°F. Spring and fall provide moderate temperatures, averaging 41°F in the spring and 57°F in the fall. Precipitation is spread out throughout the year, with a yearly average of 28 inches.

Big Sioux, South Dakota gets 30 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Big Sioux averages 32 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 Big Sioux. The US average is 205 sunny days.

Big Sioux gets some kind of precipitation, on average, 84 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 85 degrees
Winter Low: the January low is 10
Rain: averages 30 inches of rain a year
Snow: averages 32 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Big Sioux is 7.0 (10=best), which means it is one of the most pleasant places in South Dakota.

8.9 Summer - 4.6 Winter

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

Climate	Big Sioux, South Dakota	United States
	Unlock	38.1 in.
	32.3 in.	Unlock
	Unlock	106.2 days
	208 days	Unlock
	85.4°	85.8°
	Unlock	21.7°
	7	Unlock
	Unlock	4.3
	1099 ft.	Unlock

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 Big Sioux with an average high temperature of 85.4°, which ranks it as about average compared to other places in South Dakota. In Big Sioux, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Big Sioux are September, June and May.

In Big Sioux, there are 20.0 days annually when the high temperature is over 90°, which is about average compared to other places in South Dakota.

January has the coldest nighttime temperatures for Big Sioux with an average of 9.7°. This is warmer than most places in South Dakota.

In Big Sioux, there are 154.2 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in South Dakota.

In Big Sioux, there are 19.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in South Dakota.

The humidity is usually comfortable in Big Sioux 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 Big Sioux with 4.1 inches of rain, and the driest month is February with 0.7 inches. The wettest season is Autumn with 37% of yearly precipitation and 9% occurs in Spring, which is the driest season. The annual rainfall of 29.5 inches in Big Sioux means that it is one of the wettest places in South Dakota.

May is the rainiest month in Big Sioux with 10.3 days of rain, and February is the driest month with only 4.1 rainy days. There are 83.7 rainy days annually in Big Sioux, which is rainier than most places in South Dakota. The rainiest season is Summer when it rains 31% of the time and the driest is Spring with only a 16% chance of a rainy day.

An annual snowfall of 32.3 inches in Big Sioux means that it is one of the least snowy places in South Dakota. December is the snowiest month in Big Sioux with 7.3 inches of snow, and 6 months of the year have significant snowfall.

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