St. Charles, SD Climate


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United States / South Dakota / No Metro Area / Gregory County / St. Charles / Zip Codes
St. Charles, SD has a continental climate, characterized by cold winters and hot summers. During the winter months, temperatures can range from 0°F to 20°F on average, while during summer months they range between 70°F and 90°F. Snowfall is common in the winter months, often accumulating for days at a time with occasional snowdrifts and icy roads making transportation more difficult. Precipitation is generally spread throughout the year in St. Charles ranging from two to four inches of rain per month during the warmer months and up to five inches of snow per month in the colder months. Overall, St. Charles experiences mild winters but hot summers due to its continental climate.

St. Charles, South Dakota gets 26 inches of rain, on average, per year. The US average is 38 inches of rain per year.

St. Charles averages 40 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 220 sunny days per year in St. Charles. The US average is 205 sunny days.

St. Charles 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 86 degrees
Winter Low: the January low is 10
Rain: averages 26 inches of rain a year
Snow: averages 40 inches of snow a year

Bestplaces Comfort Index

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

9.2 Summer - 4.8 Winter
August, June and July are the most pleasant months in St. Charles, while January and December are the least comfortable months.

  ClimateSt. Charles, South DakotaUnited States
    Unlock38.1 in.
  39.7 in.  Unlock
    Unlock106.2 days
  220 days  Unlock
  85.8°85.8°
    Unlock21.7°
  7  Unlock
    Unlock4.3
  2073 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 St. Charles with an average high temperature of 85.8°, which ranks it as warmer than most places in South Dakota. In St. Charles, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. Charles are June, September and August.
In St. Charles, there are 23.3 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 St. Charles with an average of 10.1°. This is warmer than most places in South Dakota.
In St. Charles, there are 159.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in South Dakota.
In St. Charles, there are 18.9 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in South Dakota.
Humidity in St. Charles 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 St. Charles with 3.9 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 25.7 inches in St. Charles means that it is wetter than most places in South Dakota.
June is the rainiest month in St. Charles with 10.1 days of rain, and January is the driest month with only 3.7 rainy days. There are 79.3 rainy days annually in St. Charles, which is less rainy 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 15% chance of a rainy day.
An annual snowfall of 39.7 inches in St. Charles means that it is snowier than most places in South Dakota. March is the snowiest month in St. Charles with 7.5 inches of snow, and 7 months of the year have significant snowfall.
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