Thornton, IA Climate


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United States / Iowa / Mason City Metro Area / Cerro Gordo County / Thornton / Zip Codes
Thornton, IA experiences a humid continental climate with cold and snowy winters and warm, humid summers. Average temperatures in the winter months range from lows of around -5 °F in January to highs of around 33 °F in December. The summer months see average highs of around 85°F in July and average lows of around 61°F in June. Precipitation is spread out evenly throughout the year with an average yearly total of around 36 inches of rain and 16 inches of snowfall annually.

Thornton, Iowa gets 35 inches of rain, on average, per year. The US average is 38 inches of rain per year.

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

On average, there are 186 sunny days per year in Thornton. The US average is 205 sunny days.

Thornton gets some kind of precipitation, on average, 106 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 83 degrees
Winter Low: the January low is 7
Rain: averages 35 inches of rain a year
Snow: averages 36 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Thornton is 6.6 (10=best), which means it is one of the least comfortable places in Iowa.

9 Summer - 4.1 Winter
August, June and July are the most pleasant months in Thornton, while January and December are the least comfortable months.

  ClimateThornton, IowaUnited States
  35.1 in.38.1 in.
  36.0 in.27.8 in.
  106.1 days106.2 days
  186 days205 days
  82.7°85.8°
  7.2°21.7°
  6.67
  3.84.3
  1188 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 Thornton with an average high temperature of 82.7°, which ranks it as cooler than most places in Iowa. In Thornton, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Thornton are June, August and September.
In Thornton, there are 9.9 days annually when the high temperature is over 90°, which is cooler than most places in Iowa.
January has the coldest nighttime temperatures for Thornton with an average of 7.2°. This is colder than most places in Iowa.
In Thornton, there are 158.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Iowa.
In Thornton, there are 23.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Iowa.
The humidity is usually comfortable in Thornton 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 Thornton with 5.3 inches of rain, and the driest month is January with 0.8 inches. The wettest season is Autumn with 40% of yearly precipitation and 9% occurs in Spring, which is the driest season. The annual rainfall of 35.1 inches in Thornton means that it is drier than most places in Iowa.
May is the rainiest month in Thornton with 12.0 days of rain, and February is the driest month with only 6.1 rainy days. There are 106.1 rainy days annually in Thornton, which is rainier than most places in Iowa. The rainiest season is Summer when it rains 29% of the time and the driest is Spring with only a 19% chance of a rainy day.
An annual snowfall of 36.0 inches in Thornton means that it is snowier than most places in Iowa. December is the snowiest month in Thornton with 8.9 inches of snow, and 6 months of the year have significant snowfall.
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