Hamilton County, Iowa 

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United States / Iowa / No Metro Area / Hamilton County / Cities / Zip Codes

Climate in Hamilton County, Iowa

Hamilton County, Iowa gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Hamilton County averages 30 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 202 sunny days per year in Hamilton County. The US average is 205 sunny days.

Hamilton County gets some kind of precipitation, on average, 92 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 9
Rain: averages 36 inches of rain a year
Snow: averages 30 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Hamilton County is 6.9 (10=best), which means it is more comfortable than most places in Iowa.

6.9 / 10
June, September and August are the most pleasant months in Hamilton County, while January and December are the least comfortable months.

Climate Averages
  Hamilton, IowaUnited States
  35.6 in.38.1 in.
  30.0 in.27.8 in.
  92.0 days106.2 days
  202 days205 days
  84.0°85.8°
  8.5°21.7°
  6.97
  3.74.3
  1127 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 Hamilton County with an average high temperature of 84.0°, which ranks it as about average compared to other places in Iowa. In Hamilton County, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Hamilton County are June, September and August.


January has the coldest nighttime temperatures for Hamilton County with an average of 8.5°. This is colder than most places in Iowa.


In Hamilton County, there are 12.4 days annually when the high temperature is over 90°, which is about average compared to other places in Iowa.


In Hamilton County, there are 153.3 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Iowa.


In Hamilton County, there are 20.6 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Iowa.


June is the wettest month in Hamilton County with 5.6 inches of rain, and the driest month is January with 0.8 inches. The wettest season is Autumn with 42% of yearly precipitation and 8% occurs in Spring, which is the driest season. The annual rainfall of 35.6 inches in Hamilton County means that it is about average compared to other places in Iowa.


May is the rainiest month in Hamilton County with 11.4 days of rain, and February is the driest month with only 4.5 rainy days. There are 92.0 rainy days annually in Hamilton County, which is less rainy than most places in Iowa. The rainiest season is Summer 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 30.0 inches in Hamilton County means that it is about average compared to other places in Iowa. December is the snowiest month in Hamilton County with 8.3 inches of snow, and 6 months of the year have significant snowfall.





CLIMATE MAP
  • Annual Rainfall (US Avg: 36.5")
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    MAPS OF HAMILTON COUNTY, IOWA
    ZIP CODES IN HAMILTON COUNTY, IOWA
    50595 50130 50249 50075 50246 50271 50034 50132 50231

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