Vivian, SD Climate


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United States / South Dakota / No Metro Area / Lyman County / Vivian / Zip Codes
Vivian, SD has a semi-arid climate with cold winters and mild summers. The average temperature in January is around 16°F with the coldest month being December at 11°F. In July, the average temperature in Vivian is approximately 74°F with August being the hottest month at 78°F. Precipitation in Vivian varies greatly from season to season, with an average of 18 inches of rain per year. Most of this precipitation falls during May through September, although snowfall can occur any time from October to April. Vivian's relative humidity stays fairly consistent throughout the year, averaging 59%.

Bestplaces Comfort Index

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

8.9 Summer - 4.7 Winter
June, September and August are the most pleasant months in Vivian, while January and December are the least comfortable months.

  ClimateVivian, South DakotaUnited States
  20.0 in.38.1 in.
  40.7 in.27.8 in.
  78.6 days106.2 days
  228 days205 days
  88.0°85.8°
  9.1°21.7°
  6.97
  3.54.3
  1906 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 Vivian with an average high temperature of 88.0°, which ranks it as warmer than most places in South Dakota. In Vivian, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Vivian are September, June and May.
In Vivian, there are 31.8 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 Vivian with an average of 9.1°. This is warmer than most places in South Dakota.
In Vivian, there are 168.1 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in South Dakota.
In Vivian, there are 21.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in South Dakota.
Humidity in Vivian is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are July, August and June.
June is the wettest month in Vivian with 3.3 inches of rain, and the driest month is January with 0.4 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 20.0 inches in Vivian means that it is drier than most places in South Dakota.
May is the rainiest month in Vivian with 10.0 days of rain, and February is the driest month with only 4.1 rainy days. There are 78.6 rainy days annually in Vivian, which is less rainy 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 40.7 inches in Vivian means that it is snowier than most places in South Dakota. March is the snowiest month in Vivian with 8.9 inches of snow, and 7 months of the year have significant snowfall.
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