Ann Arbor, MI Climate


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Ann Arbor, Michigan enjoys a temperate climate with four distinct seasons. During the summer months, temperatures average around 75 degrees Fahrenheit during the day and drop to the mid-50s at night. Winters are cold and snowy, with temperatures averaging between 25 and 35 degrees Fahrenheit. Spring is mild with generally pleasant weather, and autumn brings crisp air as well as vibrant foliage in late October. Ann Arbor receives an average of 32 inches of precipitation per year, mostly from snowfall in winter and spring rains in April and May.

Ann Arbor, Michigan gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Ann Arbor averages 43 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 178 sunny days per year in Ann Arbor. The US average is 205 sunny days.

Ann Arbor 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 17
Rain: averages 36 inches of rain a year
Snow: averages 43 inches of snow a year


Bestplaces Comfort Index

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

9.2 Summer - 4.2 Winter
August, July and June are the most pleasant months in Ann Arbor, while January and December are the least comfortable months.

  ClimateAnn Arbor, MichiganUnited States
  36.0 in.38.1 in.
  43.0 in.27.8 in.
  136.9 days106.2 days
  178 days205 days
  82.8°85.8°
  16.5°21.7°
  6.77
  3.34.3
  879 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 Ann Arbor with an average high temperature of 82.8°, which ranks it as warmer than most places in Michigan. In Ann Arbor, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Ann Arbor are June, August and September.
In Ann Arbor, there are 5.8 days annually when the high temperature is over 90°, which is about average compared to other places in Michigan.
January has the coldest nighttime temperatures for Ann Arbor with an average of 16.5°. This is warmer than most places in Michigan.
In Ann Arbor, there are 140.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Michigan.
In Ann Arbor, there are 3.9 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Michigan.
Humidity in Ann Arbor is generally low and comfortable. But there some days when the humidity becomes unpleasant, especially in August and July. The most humid months (but still comfortable) are August, July and June.
June is the wettest month in Ann Arbor with 3.7 inches of rain, and the driest month is February with 2.2 inches. The wettest season is Autumn with 30% of yearly precipitation and 20% occurs in Spring, which is the driest season. The annual rainfall of 36.0 inches in Ann Arbor means that it is wetter than most places in Michigan.
December is the rainiest month in Ann Arbor with 13.9 days of rain, and September is the driest month with only 9.6 rainy days. There are 136.9 rainy days annually in Ann Arbor, 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 43.0 inches in Ann Arbor means that it is less snowy than most places in Michigan. January is the snowiest month in Ann Arbor with 12.4 inches of snow, and 6 months of the year have significant snowfall.
Reviews for Ann Arbor
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Over 7 years ago

Highly educated city. traffic and parking is bad. university culture is nice, not sure about elsewhere. no good pizza! if you're looking for food, I recommend "a taste  More

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Uh, compared to my other favorite college towns this one lacks flavor. Safer and kinda pretty, but not the greenest place, it's fine. Good restaurants, music, art,  More

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Over 9 years ago

Ann Arbor bus service (AATA) is quite good. The Detroit Metro Airport is only a 20 min. drive away and is also quite good. The traffic in Ann Arbor is usually mild  More

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