Portsmouth, OH Climate


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United States / Ohio / Portsmouth Metro Area / Scioto County / Portsmouth / Zip Codes
Portsmouth, OH has a humid continental climate with warm summers and cold winters. The average high temperature in July is around 84°F (29°C) and the average low temperature in January is 23°F (-5°C). Precipitation is spread throughout the year, with an average of 41 inches annually. Snowfall averages around 28 inches per year, though winters can vary from mild to very cold and snowy. Portsmouth experiences all four seasons with each one bringing its own unique weather conditions and beauty.

Portsmouth, Ohio gets 41 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Portsmouth averages 12 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 166 sunny days per year in Portsmouth. The US average is 205 sunny days.

Portsmouth gets some kind of precipitation, on average, 126 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 85 degrees
Winter Low: the January low is 22
Rain: averages 41 inches of rain a year
Snow: averages 12 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Portsmouth is 7.3 (10=best), which means it is one of the most pleasant places in Ohio.

8.8 Summer - 5.4 Winter
June, September and August are the most pleasant months in Portsmouth, while January and February are the least comfortable months.

  ClimatePortsmouth, OhioUnited States
  41.4 in.38.1 in.
  11.9 in.27.8 in.
  126.1 days106.2 days
  166 days205 days
  85.1°85.8°
  21.9°21.7°
  7.37
  4.24.3
  535 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 Portsmouth with an average high temperature of 85.1°, which ranks it as warmer than most places in Ohio. In Portsmouth, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Portsmouth are September, May and June.
In Portsmouth, there are 15.6 days annually when the high temperature is over 90°, which is hotter than most places in Ohio.
January has the coldest nighttime temperatures for Portsmouth with an average of 21.9°. This is one of the warmest places in Ohio.
In Portsmouth, there are 113.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Ohio.
In Portsmouth, there are 2.1 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Ohio.
The humidity is usually comfortable in Portsmouth but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. The most humid months are July, August and June.
May is the wettest month in Portsmouth with 4.8 inches of rain, and the driest month is September with 2.8 inches. The wettest season is Summer with 29% of yearly precipitation and 21% occurs in Winter, which is the driest season. The annual rainfall of 41.4 inches in Portsmouth means that it is wetter than most places in Ohio.
May is the rainiest month in Portsmouth with 12.7 days of rain, and September is the driest month with only 7.6 rainy days. There are 126.1 rainy days annually in Portsmouth, which is about average compared to other places in Ohio. The rainiest season is Summer when it rains 29% of the time and the driest is Winter with only a 21% chance of a rainy day.
An annual snowfall of 11.9 inches in Portsmouth means that it is one of the least snowy places in Ohio. January is the snowiest month in Portsmouth with 5.1 inches of snow, and 4 months of the year have significant snowfall.
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Laura · Manchester, OH
Former College Student
Over 18 years ago

Portsmouth is a poor town. However, Shawnee State University is located there--a good place to get a highly-affordable college education. The people there are very  More

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