Zip 57339 (Fort Thompson, SD) Climate

Fort Thompson, SD has a continental climate with hot summers and cold winters. The average annual temperature in the area is around 40 degrees Fahrenheit, with temperatures reaching as high as 90°F in the summer and dropping as low as -19°F in the winter. The area receives approximately 22 inches of precipitation annually, with a majority of it falling between April and October. Snowfall typically peaks in December and January, but there can be snow any time of year. During the summer months, Fort Thompson experiences high humidity levels which can make it quite uncomfortable.

Fort Thompson (zip 57339), South Dakota gets 21 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Fort Thompson (zip 57339) averages 37 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 212 sunny days per year in Fort Thompson (zip 57339). The US average is 205 sunny days.

Fort Thompson (zip 57339) gets some kind of precipitation, on average, 71 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 87 degrees
Winter Low: the January low is 6
Rain: averages 21 inches of rain a year
Snow: averages 37 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 57339 zip code is 7.0 (10=best), which means it is one of the most pleasant places in South Dakota.

9.1 Summer - 4.7 Winter

June, August and September are the most pleasant months in the 57339 zip code, while January and December are the least comfortable months.

Climate	Fort Thompson, South Dakota	United States
	Unlock	38.1 in.
	36.9 in.	Unlock
	Unlock	106.2 days
	212 days	Unlock
	86.9°	85.8°
	Unlock	21.7°
	7	Unlock
	Unlock	4.3
	1449 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 the 57339 zip code with an average high temperature of 86.9°, which ranks it as warmer than most places in South Dakota. In the 57339 zip code, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 57339 zip code are June, September and August.

In the 57339 zip code, there are 27.8 days annually when the high temperature is over 90°, which is hotter than most places in South Dakota.

January has the coldest nighttime temperatures for the 57339 zip code with an average of 6.0°. This is about average compared to other places in South Dakota.

In the 57339 zip code, there are 171.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in South Dakota.

In the 57339 zip code, there are 26.9 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in South Dakota.

Humidity in the 57339 zip code is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are July, August and June.

June is the wettest month in the 57339 zip code with 3.7 inches of rain, and the driest month is January with 0.4 inches. The wettest season is Autumn with 42% of yearly precipitation and 6% occurs in Spring, which is the driest season. The annual rainfall of 20.6 inches in the 57339 zip code means that it is drier than most places in South Dakota.

June is the rainiest month in the 57339 zip code with 9.9 days of rain, and January is the driest month with only 2.8 rainy days. There are 70.5 rainy days annually in the 57339 zip code, which is one of the least rainy places in South Dakota. The rainiest season is Autumn when it rains 37% of the time and the driest is Spring with only a 12% chance of a rainy day.

An annual snowfall of 36.9 inches in the 57339 zip code means that it is about average compared to other places in South Dakota. March is the snowiest month in the 57339 zip code with 8.4 inches of snow, and 7 months of the year have significant snowfall.

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