Hartley, IA Climate


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United States / Iowa / No Metro Area / O'Brien County / Hartley / Zip Codes
Hartley, IA has a humid continental climate, typically characterized by hot summers and cold winters. The average temperature for the year is 45 degrees Fahrenheit with an average high of 71 degrees and a low of 21 across the four seasons. Precipitation levels are fairly mild, averaging out to about 30 inches per year. Snowfall in winter months averages 13 inches per season. During summer months, humidity is usually at its highest and temperatures can reach as high as 90 degrees on some days.

Hartley, Iowa gets 30 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Hartley averages 36 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 208 sunny days per year in Hartley. The US average is 205 sunny days.

Hartley gets some kind of precipitation, on average, 94 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 7
Rain: averages 30 inches of rain a year
Snow: averages 36 inches of snow a year


Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Hartley is 6.8 (10=best), which means it is about average compared to other places in Iowa.

9 Summer - 4.3 Winter
June, August and September are the most pleasant months in Hartley, while January and December are the least comfortable months.

  ClimateHartley, IowaUnited States
  29.7 in.38.1 in.
  36.2 in.27.8 in.
  94.4 days106.2 days
  208 days205 days
  83.6°85.8°
  7.3°21.7°
  6.87
  3.84.3
  1470 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 Hartley with an average high temperature of 83.6°, which ranks it as cooler than most places in Iowa. In Hartley, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Hartley are June, August and September.
In Hartley, there are 11.5 days annually when the high temperature is over 90°, which is cooler than most places in Iowa.
January has the coldest nighttime temperatures for Hartley with an average of 7.3°. This is colder than most places in Iowa.
In Hartley, there are 156.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Iowa.
In Hartley, there are 23.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Iowa.
The humidity is usually comfortable in Hartley 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 Hartley with 4.6 inches of rain, and the driest month is January with 0.6 inches. The wettest season is Autumn with 41% of yearly precipitation and 7% occurs in Spring, which is the driest season. The annual rainfall of 29.7 inches in Hartley means that it is one of the driest places in Iowa.
June is the rainiest month in Hartley with 11.4 days of rain, and February is the driest month with only 4.6 rainy days. There are 94.4 rainy days annually in Hartley, which is less rainy than most places in Iowa. The rainiest season is Autumn when it rains 30% of the time and the driest is Spring with only a 17% chance of a rainy day.
An annual snowfall of 36.2 inches in Hartley means that it is snowier than most places in Iowa. December is the snowiest month in Hartley with 9.3 inches of snow, and 6 months of the year have significant snowfall.
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