Washtenaw County, Michigan 

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United States / Michigan / Ann Arbor / Washtenaw County / Cities / Zip Codes

Climate in Washtenaw County, Michigan

Washtenaw County, Michigan gets 35 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Washtenaw County averages 43 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 179 sunny days per year in Washtenaw County. The US average is 205 sunny days.

Washtenaw County gets some kind of precipitation, on average, 137 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 16
Rain: averages 35 inches of rain a year
Snow: averages 43 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Washtenaw County is 6.7 (10=best), which means it is more comfortable than most places in Michigan.

6.7 / 10
August, July and June are the most pleasant months in Washtenaw County, while January and December are the least comfortable months.

Climate Averages
  Washtenaw, MichiganUnited States
  34.7 in.38.1 in.
  42.8 in.27.8 in.
  136.5 days106.2 days
  179 days205 days
  82.8°85.8°
  15.9°21.7°
  6.77
  3.34.3
  878 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 Washtenaw County with an average high temperature of 82.8°, which ranks it as warmer than most places in Michigan. In Washtenaw County, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Washtenaw County are June, August and September.


January has the coldest nighttime temperatures for Washtenaw County with an average of 15.9°. This is warmer than most places in Michigan.


In Washtenaw County, there are 6.0 days annually when the high temperature is over 90°, which is about average compared to other places in Michigan.


In Washtenaw County, there are 142.7 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Michigan.


In Washtenaw County, there are 5.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Michigan.


June is the wettest month in Washtenaw County with 3.6 inches of rain, and the driest month is January with 2.0 inches. The wettest season is Autumn with 30% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 34.7 inches in Washtenaw County means that it is wetter than most places in Michigan.


December is the rainiest month in Washtenaw County with 13.8 days of rain, and September is the driest month with only 9.6 rainy days. There are 136.5 rainy days annually in Washtenaw County, which is rainier than most places in Michigan. The rainiest season is Spring when it rains 28% of the time and the driest is Autumn with only a 23% chance of a rainy day.


An annual snowfall of 42.8 inches in Washtenaw County means that it is less snowy than most places in Michigan. January is the snowiest month in Washtenaw County with 12.5 inches of snow, and 6 months of the year have significant snowfall.





CLIMATE MAP
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    MAPS OF WASHTENAW COUNTY, MICHIGAN
    ZIP CODES IN WASHTENAW COUNTY, MICHIGAN
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