Capital, SD Climate


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Capital, SD has a mild climate with four distinct seasons. Summer temperatures average in the mid-70s Fahrenheit and winter temperatures tend to stay near the freezing point or below. Spring and fall bring moderate temperatures with cool nights and mild days. Precipitation is relatively low year-round, but does pick up in the late spring and early summer months as thunderstorms move through. Snowfall is light but can accumulate quickly in winter months and create hazardous driving conditions.

Bestplaces Comfort Index

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

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

  ClimateCapital, South DakotaUnited States
  25.4 in.38.1 in.
  35.9 in.27.8 in.
  81.9 days106.2 days
  210 days205 days
  86.1°85.8°
  8.8°21.7°
  6.97
  3.64.3
  1298 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 Capital with an average high temperature of 86.1°, which ranks it as warmer than most places in South Dakota. In Capital, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Capital are September, June and August.
In Capital, there are 23.7 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 Capital with an average of 8.8°. This is warmer than most places in South Dakota.
In Capital, there are 156.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in South Dakota.
In Capital, there are 21.2 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 Capital 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 Capital with 3.8 inches of rain, and the driest month is January with 0.5 inches. The wettest season is Autumn with 39% of yearly precipitation and 7% occurs in Spring, which is the driest season. The annual rainfall of 25.4 inches in Capital means that it is wetter than most places in South Dakota.
May is the rainiest month in Capital with 10.2 days of rain, and January is the driest month with only 4.3 rainy days. There are 81.9 rainy days annually in Capital, which is about average compared to other 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 35.9 inches in Capital means that it is less snowy than most places in South Dakota. December is the snowiest month in Capital with 7.3 inches of snow, and 7 months of the year have significant snowfall.
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