Portage, MI 

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Climate in Portage, MI

Portage, MI has a continental climate, which generally means it experiences warm summers and cold winters. The summer months typically range from mild to hot temperatures with humid conditions and frequent rain showers. Winters can become quite cold, with the average January temperature around 20 degrees Fahrenheit. Though snowfall is common during the winter months, temperatures rarely drop below zero degrees Fahrenheit. Throughout the year, Portage enjoys ample sunshine and moderate precipitation averages for Michigan's Lower Peninsula.

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

Portage averages 47 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 159 sunny days per year in Portage. The US average is 205 sunny days.

Portage gets some kind of precipitation, on average, 139 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 17
Rain: averages 36 inches of rain a year
Snow: averages 47 inches of snow a year


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

9.1 / 4.1

Summer   /   Winter
June, August and July are the most pleasant months in Portage, while January and December are the least comfortable months.

Climate Averages
  Portage, MichiganUnited States
  36.2 in.38.1 in.
  47.2 in.27.8 in.
  139.0 days106.2 days
  159 days205 days
  879 ft.2443 ft.


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 Portage with an average high temperature of 83.7°, which ranks it as one of the hottest places in Michigan. In Portage, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Portage are June, August and September.

In Portage, there are 9.4 days annually when the high temperature is over 90°, which is one of the hottest places in Michigan.

January has the coldest nighttime temperatures for Portage with an average of 17.1°. This is warmer than most places in Michigan.

In Portage, there are 132.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Michigan.

In Portage, there are 5.1 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Michigan.

The humidity is usually comfortable in Portage but some summer days can be muggy. August is the most humid month, though it is still relatively mild compared to many other places. The most humid months are August, July and June.

September is the wettest month in Portage with 4.0 inches of rain, and the driest month is February with 1.6 inches. The wettest season is Autumn with 30% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 36.2 inches in Portage means that it is wetter than most places in Michigan.

December is the rainiest month in Portage with 14.5 days of rain, and July is the driest month with only 9.6 rainy days. There are 139.0 rainy days annually in Portage, 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 22% chance of a rainy day.

An annual snowfall of 47.2 inches in Portage means that it is about average compared to other places in Michigan. December is the snowiest month in Portage with 13.9 inches of snow, and 6 months of the year have significant snowfall.

  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Portage    3 Reviews
    Kalamazoo is not that bad - 3/1/2016
    I'm just writing because I think that the people who are in my opinion bashing Kalamazoo, really don't know anything about it. I have vacationed in much larger cities,... Read More

    Start Your Review of Portage

    Cold winters, but they beat the summers if asthma - 2/22/2012
    Before I moved to Portage in 2007, I didn't have any real breathing problems. I had a minor case of hay fever. I moved here and I am stuck inside most of the summer... Read More

    Nice Place to Live - 7/26/2005
    Portage is a nice palce to live and raise a family. I don't think it would be a good place for a single... Read More

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