Grafton, Iowa 

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Climate in Grafton, Iowa

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

Grafton averages 39 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 184 sunny days per year in Grafton. The US average is 205 sunny days.

Grafton 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 82 degrees
Winter Low: the January low is 6
Rain: averages 35 inches of rain a year
Snow: averages 39 inches of snow a year


BESTPLACES COMFORT INDEX

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

6.6 / 10
August, June and July are the most pleasant months in Grafton, while January and December are the least comfortable months.

Climate Averages
  Grafton, IowaUnited States
  35.4 in.38.1 in.
  38.8 in.27.8 in.
  94.2 days106.2 days
  184 days205 days
  81.5°85.8°
  5.8°21.7°
  6.67
  3.34.3
  1230 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 Grafton with an average high temperature of 81.5°, which ranks it as one of the coolest places in Iowa. In Grafton, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Grafton are June, August and July.


January has the coldest nighttime temperatures for Grafton with an average of 5.8°. This is one of the coldest places in Iowa.


In Grafton, there are 7.0 days annually when the high temperature is over 90°, which is one of the coolest places in Iowa.


In Grafton, there are 159.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Iowa.


In Grafton, there are 26.8 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Iowa.


June is the wettest month in Grafton with 5.1 inches of rain, and the driest month is January with 0.9 inches. The wettest season is Autumn with 39% of yearly precipitation and 9% occurs in Spring, which is the driest season. The annual rainfall of 35.4 inches in Grafton means that it is about average compared to other places in Iowa.


May is the rainiest month in Grafton with 11.0 days of rain, and February is the driest month with only 4.8 rainy days. There are 94.2 rainy days annually in Grafton, 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 18% chance of a rainy day.


An annual snowfall of 38.8 inches in Grafton means that it is one of the snowiest places in Iowa. December is the snowiest month in Grafton with 9.8 inches of snow, and 6 months of the year have significant snowfall.





CLIMATE MAP
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