Delaware, SD Climate


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United States / South Dakota / Sioux Falls Metro Area / Lincoln County / Delaware / Zip Codes
Delaware, SD has a humid continental climate which is characterized by four distinct seasons. Summers are warm and humid with occasional thunderstorms, while winters are cold and snowy. Spring and autumn tend to be mild, with sunny days and cool nights. The area receives an average of 33 inches of rain annually and an average of 57 inches of snowfall each year. The temperature typically varies from 15°F to 86°F throughout the year, although temperatures can reach much higher or lower extremes depending on weather conditions.

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Delaware 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 Delaware, while January and December are the least comfortable months.

  ClimateDelaware, South DakotaUnited States
  26.6 in.38.1 in.
  31.7 in.27.8 in.
  86.7 days106.2 days
  208 days205 days
  84.4°85.8°
  7.2°21.7°
  6.97
  3.54.3
  1271 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 Delaware with an average high temperature of 84.4°, which ranks it as about average compared to other places in South Dakota. In Delaware, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Delaware are June, September and August.
In Delaware, there are 15.7 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 Delaware with an average of 7.2°. This is about average compared to other places in South Dakota.
In Delaware, there are 158.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in South Dakota.
In Delaware, there are 24.5 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in South Dakota.
The humidity is usually comfortable in Delaware but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. The most humid months are July, August and June.
June is the wettest month in Delaware with 4.1 inches of rain, and the driest month is January with 0.5 inches. The wettest season is Autumn with 40% of yearly precipitation and 6% occurs in Spring, which is the driest season. The annual rainfall of 26.6 inches in Delaware means that it is wetter than most places in South Dakota.
May is the rainiest month in Delaware with 11.1 days of rain, and February is the driest month with only 4.2 rainy days. There are 86.7 rainy days annually in Delaware, which is rainier than most places in South Dakota. The rainiest season is Summer when it rains 31% of the time and the driest is Spring with only a 16% chance of a rainy day.
An annual snowfall of 31.7 inches in Delaware means that it is one of the least snowy places in South Dakota. December is the snowiest month in Delaware with 7.0 inches of snow, and 7 months of the year have significant snowfall.
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