Castlewood, SD Climate


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United States / South Dakota / No Metro Area / Hamlin County / Castlewood / Zip Codes
Castlewood, SD has a continental climate with warm to hot summers and cold winters. The area experiences plenty of sunshine throughout the year and receives an average of 30 inches of rain per year, making it a great place for outdoor activities such as camping, fishing, and hiking. Average temperatures in summer range from the mid-70sF during the day to the mid-50sF at night while winter lows can dip below 0F. Snowfall is common in winter, ranging from light dustings to heavy snowstorms. Overall, Castlewood has a pleasant climate that allows for outdoor activities throughout much of the year.

Castlewood, South Dakota gets 25 inches of rain, on average, per year. The US average is 38 inches of rain per year.

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

On average, there are 207 sunny days per year in Castlewood. The US average is 205 sunny days.

Castlewood gets some kind of precipitation, on average, 86 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 83 degrees
Winter Low: the January low is 2
Rain: averages 25 inches of rain a year
Snow: averages 38 inches of snow a year

Bestplaces Comfort Index

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

9.3 Summer - 4 Winter
August, July and June are the most pleasant months in Castlewood, while January and December are the least comfortable months.

  ClimateCastlewood, South DakotaUnited States
  24.7 in.38.1 in.
  38.2 in.27.8 in.
  86.3 days106.2 days
  207 days205 days
  82.6°85.8°
  2.1°21.7°
  6.67
  3.54.3
  1686 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 Castlewood with an average high temperature of 82.6°, which ranks it as cooler than most places in South Dakota. In Castlewood, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Castlewood are June, August and July.
In Castlewood, there are 9.8 days annually when the high temperature is over 90°, which is cooler than most places in South Dakota.
January has the coldest nighttime temperatures for Castlewood with an average of 2.1°. This is one of the coldest places in South Dakota.
In Castlewood, there are 177.7 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in South Dakota.
In Castlewood, there are 35.3 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in South Dakota.
Humidity in Castlewood 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 Castlewood with 3.9 inches of rain, and the driest month is February with 0.5 inches. The wettest season is Autumn with 42% of yearly precipitation and 7% occurs in Spring, which is the driest season. The annual rainfall of 24.7 inches in Castlewood means that it is wetter than most places in South Dakota.
June is the rainiest month in Castlewood with 10.8 days of rain, and February is the driest month with only 4.5 rainy days. There are 86.3 rainy days annually in Castlewood, 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 17% chance of a rainy day.
An annual snowfall of 38.2 inches in Castlewood means that it is about average compared to other places in South Dakota. December is the snowiest month in Castlewood with 8.1 inches of snow, and 7 months of the year have significant snowfall.
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