St. Onge, SD Climate


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St. Onge, SD has a semi-arid climate with hot summers and cold winters. The average high temperature during the summer months is around 80°F, while the average low temperatures dip to around 40°F in the winter months. Rainfall for St. Onge is scarce, with most of it coming in the form of spring and summer storms. Snowfall occurs throughout the winter months and can range from light dustings to several inches at a time.

Bestplaces Comfort Index

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

9.1 Summer - 5.2 Winter
August, June and September are the most pleasant months in St. Onge, while January and December are the least comfortable months.

  ClimateSt. Onge, South DakotaUnited States
  20.9 in.38.1 in.
  34.3 in.27.8 in.
  90.5 days106.2 days
  226 days205 days
  86.5°85.8°
  16.2°21.7°
  77
  4.74.3
  3432 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 St. Onge with an average high temperature of 86.5°, which ranks it as warmer than most places in South Dakota. In St. Onge, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. Onge are June, September and August.
In St. Onge, there are 27.6 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. Onge with an average of 16.2°. This is one of the warmest places in South Dakota.
In St. Onge, there are 146.9 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in South Dakota.
In St. Onge, there are 14.3 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in South Dakota.
Humidity in St. Onge 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.
May is the wettest month in St. Onge with 3.7 inches of rain, and the driest month is January with 0.5 inches. The wettest season is Summer with 36% of yearly precipitation and 8% occurs in Spring, which is the driest season. The annual rainfall of 20.9 inches in St. Onge means that it is drier than most places in South Dakota.
June is the rainiest month in St. Onge with 11.5 days of rain, and February is the driest month with only 5.6 rainy days. There are 90.5 rainy days annually in St. Onge, which is one of the rainiest places in South Dakota. The rainiest season is Summer when it rains 31% of the time and the driest is Spring with only a 19% chance of a rainy day.
An annual snowfall of 34.3 inches in St. Onge means that it is less snowy than most places in South Dakota. March is the snowiest month in St. Onge with 7.6 inches of snow, and 8 months of the year have significant snowfall.
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