Mount Vernon, SD Climate


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United States / South Dakota / Mitchell Metro Area / Davison County / Mount Vernon / Zip Codes
Mount Vernon, SD has a continental climate with cold winters and warm summers. Average lows in winter reach around 19°F and average highs in summer range between 79°F and 85°F. Precipitation is spread fairly evenly throughout the year, with slightly more during summer months. Snowfall typically begins late October and can continue into April of the following year. Yearly snow totals are usually around 20 inches.

Mount Vernon, South Dakota gets 24 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Mount Vernon averages 34 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 214 sunny days per year in Mount Vernon. The US average is 205 sunny days.

Mount Vernon gets some kind of precipitation, on average, 79 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 9
Rain: averages 24 inches of rain a year
Snow: averages 34 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Mount Vernon is 6.9 (10=best), which means it is more comfortable than most places in South Dakota.

9.1 Summer - 4.5 Winter
June, August and September are the most pleasant months in Mount Vernon, while January and December are the least comfortable months.

  ClimateMount Vernon, South DakotaUnited States
  24.2 in.38.1 in.
  34.1 in.27.8 in.
  79.0 days106.2 days
  214 days205 days
  86.5°85.8°
  8.5°21.7°
  6.97
  3.54.3
  1411 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 Mount Vernon with an average high temperature of 86.5°, which ranks it as warmer than most places in South Dakota. In Mount Vernon, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mount Vernon are September, June and August.
In Mount Vernon, there are 22.6 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 Mount Vernon with an average of 8.5°. This is warmer than most places in South Dakota.
In Mount Vernon, there are 157.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in South Dakota.
In Mount Vernon, there are 21.4 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 Mount Vernon but some summer days can be muggy. July is the most humid month, though it is still relatively mild compared to many other places. The most humid months are July, August and June.
June is the wettest month in Mount Vernon with 4.4 inches of rain, and the driest month is January with 0.5 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 24.2 inches in Mount Vernon means that it is about average compared to other places in South Dakota.
May is the rainiest month in Mount Vernon with 10.1 days of rain, and December is the driest month with only 3.6 rainy days. There are 79.0 rainy days annually in Mount Vernon, which is less rainy than most places in South Dakota. The rainiest season is Summer when it rains 32% of the time and the driest is Spring with only a 14% chance of a rainy day.
An annual snowfall of 34.1 inches in Mount Vernon means that it is less snowy than most places in South Dakota. December is the snowiest month in Mount Vernon with 6.6 inches of snow, and 7 months of the year have significant snowfall.
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