Portage, SD Climate


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Portage, SD has a continental climate with cold winters and warm summers. Average summer temperatures reach as high as 87°F, while winter temperatures can drop down to -11°F. The area experiences moderate amounts of rainfall and snowfall throughout the year. During the months of June through August, Portage receives an average of 15 inches of rain per year whereas during the months of December through February, it receives an average of 23 inches of snow per year.

Bestplaces Comfort Index

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

9.2 Summer - 3.9 Winter
August, July and June are the most pleasant months in Portage, while January and December are the least comfortable months.

  ClimatePortage, South DakotaUnited States
  22.6 in.38.1 in.
  41.2 in.27.8 in.
  79.1 days106.2 days
  202 days205 days
  84.0°85.8°
  0.8°21.7°
  6.67
  34.3
  1289 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 Portage with an average high temperature of 84.0°, which ranks it as cooler than most places in South Dakota. In Portage, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Portage are June, August and September.
In Portage, there are 14.9 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 Portage with an average of 0.8°. This is one of the coldest places in South Dakota.
In Portage, there are 175.3 days annually when the nighttime low temperature falls below freezing, which is colder than most places in South Dakota.
In Portage, there are 39.3 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in South Dakota.
Humidity in Portage 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 Portage with 3.6 inches of rain, and the driest month is January with 0.5 inches. The wettest season is Autumn with 43% of yearly precipitation and 7% occurs in Spring, which is the driest season. The annual rainfall of 22.6 inches in Portage means that it is about average compared to other places in South Dakota.
June is the rainiest month in Portage with 10.1 days of rain, and December is the driest month with only 4.4 rainy days. There are 79.1 rainy days annually in Portage, which is less rainy than most places in South Dakota. The rainiest season is Autumn when it rains 33% of the time and the driest is Spring with only a 18% chance of a rainy day.
An annual snowfall of 41.2 inches in Portage means that it is snowier than most places in South Dakota. January is the snowiest month in Portage with 7.8 inches of snow, and 7 months of the year have significant snowfall.
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