Zip 57421 (Amherst, SD) Climate

57421 Amherst, SD has a semi-arid climate with warm summers and cold winters. The average high in July is 81°F (27°C), with an average low of 59°F (15°C). January is the coldest month with an average high of 28°F (-2°C) and an average low of 8°F (-13°C). Precipitation is fairly light, averaging 16 inches (41 cm) annually. Snowfall averages around 20 inches (51 cm) per year, and the area sees around 180 days of sunshine each year.

Amherst (zip 57421), South Dakota gets 23 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Amherst (zip 57421) averages 41 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 202 sunny days per year in Amherst (zip 57421). The US average is 205 sunny days.

Amherst (zip 57421) 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 84 degrees
Winter Low: the January low is 1
Rain: averages 23 inches of rain a year
Snow: averages 41 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 57421 zip code is 6.6 (10=best), which means it is less comfortable than most places in South Dakota.

9.3 Summer - 3.9 Winter

August, July and June are the most pleasant months in the 57421 zip code, while January and December are the least comfortable months.

Climate	Amherst, South Dakota	United States
	Unlock	38.1 in.
	40.7 in.	Unlock
	Unlock	106.2 days
	202 days	Unlock
	84.1°	85.8°
	Unlock	21.7°
	6.6	Unlock
	Unlock	4.3
	1301 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 57421 zip code with an average high temperature of 84.1°, which ranks it as cooler than most places in South Dakota. In the 57421 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 57421 zip code are June, August and September.

In the 57421 zip code, there are 14.9 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 the 57421 zip code with an average of 1.4°. This is one of the coldest places in South Dakota.

In the 57421 zip code, there are 171.7 days annually when the nighttime low temperature falls below freezing, which is colder than most places in South Dakota.

In the 57421 zip code, there are 37.7 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in South Dakota.

Humidity in the 57421 zip code is generally low and comfortable. But there some days when the humidity becomes unpleasant, especially in July and August. The most humid months (but still comfortable) are July, August and June.

June is the wettest month in the 57421 zip code with 3.7 inches of rain, and the driest month is January with 0.5 inches. The wettest season is Autumn with 43% of yearly precipitation and 7% occurs in Spring, which is the driest season. The annual rainfall of 22.8 inches in the 57421 zip code means that it is about average compared to other places in South Dakota.

June is the rainiest month in the 57421 zip code with 10.3 days of rain, and February is the driest month with only 5.0 rainy days. There are 83.6 rainy days annually in the 57421 zip code, which is rainier 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 19% chance of a rainy day.

An annual snowfall of 40.7 inches in the 57421 zip code means that it is snowier than most places in South Dakota. December is the snowiest month in the 57421 zip code with 8.1 inches of snow, and 7 months of the year have significant snowfall.

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