Olean, SD Climate


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United States / South Dakota / No Metro Area / Spink County / Olean / Zip Codes
Olean, SD experiences a humid continental type of climate. It has warm summers with high humidity levels and cold winters with significant snowfall. The temperature in Olean varies greatly during the year, with average highs reaching into the mid 80s (Fahrenheit) during the summer months and dropping to around 10 degrees Fahrenheit in the winter months. Precipitation is abundant throughout the year, with most of it coming in the form of rain from April to October and snowfall from November to March. Overall, the climate in Olean is mild and temperate, making it an ideal place to live for those who enjoy all four seasons!

Olean, South Dakota gets 23 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Olean averages 26 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 206 sunny days per year in Olean. The US average is 205 sunny days.

Olean gets some kind of precipitation, on average, 75 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 84 degrees
Winter Low: the January low is 2
Rain: averages 23 inches of rain a year
Snow: averages 26 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Olean is 6.7 (10=best), which means it is less comfortable than most places in South Dakota.

9.2 Summer - 4.2 Winter
August, July and June are the most pleasant months in Olean, while January and December are the least comfortable months.

  ClimateOlean, South DakotaUnited States
    Unlock38.1 in.
  25.7 in.  Unlock
    Unlock106.2 days
  206 days  Unlock
  83.8°85.8°
    Unlock21.7°
  6.7  Unlock
    Unlock4.3
  1348 ft.  Unlock
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 Olean with an average high temperature of 83.8°, which ranks it as cooler than most places in South Dakota. In Olean, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Olean are June, September and August.
In Olean, there are 11.1 days annually when the high temperature is over 90°, which is cooler than most places in South Dakota.
January has the coldest nighttime temperatures for Olean with an average of 2.4°. This is colder than most places in South Dakota.
In Olean, there are 173.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in South Dakota.
In Olean, there are 32.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in South Dakota.
Humidity in Olean 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 Olean with 3.7 inches of rain, and the driest month is January with 0.5 inches. The wettest season is Autumn with 42% of yearly precipitation and 7% occurs in Spring, which is the driest season. The annual rainfall of 22.7 inches in Olean means that it is about average compared to other places in South Dakota.
June is the rainiest month in Olean with 9.7 days of rain, and February is the driest month with only 4.4 rainy days. There are 75.4 rainy days annually in Olean, which is less rainy than most places in South Dakota. The rainiest season is Autumn when it rains 32% of the time and the driest is Spring with only a 18% chance of a rainy day.
An annual snowfall of 25.7 inches in Olean means that it is one of the least snowy places in South Dakota. February is the snowiest month in Olean with 5.8 inches of snow, and 7 months of the year have significant snowfall.
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