Potomac, Maryland 

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Climate in Potomac, Maryland

Potomac, Maryland gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Potomac averages 17 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 201 sunny days per year in Potomac. The US average is 205 sunny days.

Potomac gets some kind of precipitation, on average, 114 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 86 degrees
Winter Low: the January low is 25
Rain: averages 42 inches of rain a year
Snow: averages 17 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Potomac is 7.3 (10=best), which means it is more comfortable than most places in Maryland.

7.3 / 10
September, June and May are the most pleasant months in Potomac, while January and February are the least comfortable months.

Climate Averages
  Potomac, MarylandUnited States
  42.0 in.38.1 in.
  16.8 in.27.8 in.
  114.0 days106.2 days
  201 days205 days
  85.7°85.8°
  25.3°21.7°
  7.37
  4.14.3
  361 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 Potomac with an average high temperature of 85.7°, which ranks it as cooler than most places in Maryland. In Potomac, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Potomac are September, June and May.


January has the coldest nighttime temperatures for Potomac with an average of 25.3°. This is about average compared to other places in Maryland.


In Potomac, there are 18.6 days annually when the high temperature is over 90°, which is cooler than most places in Maryland.


In Potomac, there are 87.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Maryland.


In Potomac, there are 0.2 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Maryland.


May is the wettest month in Potomac with 4.3 inches of rain, and the driest month is February with 2.7 inches. The wettest season is Summer with 27% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 42.0 inches in Potomac means that it is drier than most places in Maryland.


May is the rainiest month in Potomac with 11.9 days of rain, and February is the driest month with only 8.4 rainy days. There are 114.0 rainy days annually in Potomac, which is about average compared to other places in Maryland. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 23% chance of a rainy day.


An annual snowfall of 16.8 inches in Potomac means that it is snowier than most places in Maryland. January is the snowiest month in Potomac with 6.4 inches of snow, and 5 months of the year have significant snowfall.





CLIMATE MAP
  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Potomac    2 Reviews
    Climate - 6/19/2008
    Spring and Fall can be quite glorious when the leaves turn or the tulips pop out and the humidity is lower. Winter, while it has some splendid "snow days," goes on much... Read More

    Start Your Review of Potomac


    Great Place to Live! - 1/19/2008
    The Potomac area in Montgomery County, Maryland, has the best of everything. High schools rated in the top 5 in the State, easy access to the Nation's Capitol,... Read More


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