Climate in Sioux Falls, South Dakota

Sioux Falls, SD has a humid continental climate, characterized by hot summers with temperatures averaging in the mid 80s Fahrenheit (29 Celsius) and cold winters with temperatures averaging in the low 20s Fahrenheit (-6 Celsius). On average, Sioux Falls receives about 33 inches (84 cm) of precipitation each year and experiences 54 days of snowfall annually. The area is also known for its strong winds which can reach up to 35 miles per hour (56 km/h).

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

Sioux Falls averages 38 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 211 sunny days per year in Sioux Falls. The US average is 205 sunny days.

Sioux Falls gets some kind of precipitation, on average, 90 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 84 degrees
Winter Low: the January low is 6
Rain: averages 27 inches of rain a year
Snow: averages 38 inches of snow a year

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BESTPLACES COMFORT INDEX

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

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

July is the hottest month for Sioux Falls with an average high temperature of 83.5°, which ranks it as cooler than most places in South Dakota. In Sioux Falls, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sioux Falls are June, August and September.

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In Sioux Falls, there are 11.2 days annually when the high temperature is over 90°, which is cooler than most places in South Dakota.

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January has the coldest nighttime temperatures for Sioux Falls with an average of 6.3°. This is about average compared to other places in South Dakota.

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In Sioux Falls, there are 161.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in South Dakota.

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In Sioux Falls, there are 26.3 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in South Dakota.

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The humidity is usually comfortable in Sioux Falls 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.

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June is the wettest month in Sioux Falls with 4.0 inches of rain, and the driest month is January with 0.6 inches. The wettest season is Autumn with 38% of yearly precipitation and 7% occurs in Spring, which is the driest season. The annual rainfall of 26.7 inches in Sioux Falls means that it is wetter than most places in South Dakota.

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May is the rainiest month in Sioux Falls with 10.8 days of rain, and February is the driest month with only 5.1 rainy days. There are 90.1 rainy days annually in Sioux Falls, which is one of the rainiest places in South Dakota. The rainiest season is Autumn when it rains 30% of the time and the driest is Spring with only a 17% chance of a rainy day.

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An annual snowfall of 37.6 inches in Sioux Falls means that it is about average compared to other places in South Dakota. December is the snowiest month in Sioux Falls with 7.0 inches of snow, and 7 months of the year have significant snowfall.

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