Irmo, South Carolina 

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Climate in Irmo, South Carolina

Irmo, South Carolina gets 45 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Irmo averages 1 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 222 sunny days per year in Irmo. The US average is 205 sunny days.

Irmo gets some kind of precipitation, on average, 103 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 Highs & Lows

Summer High: the July high is around 93 degrees
Winter Low: the January low is 30


SPERLING'S COMFORT INDEX
Irmo ranks 56/100 for Comfort Index

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 54. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.


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.

CLIMATE

Climate Averages
  Irmo, South CarolinaUnited States
  44.8 in.38.1 in.
  0.9 in.27.8 in.
  103.3 days106.2 days
  222 days205 days
  93.0°85.8°
  30.3°21.7°
  5654
  4.94.3
  358 ft.2443 ft.

July is the hottest month for Irmo with an average high temperature of 93.0°, which ranks it as one of the hottest places in South Carolina. In Irmo, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Irmo are April, October and May.


January has the coldest nighttime temperatures for Irmo with an average of 30.3°. This is colder than most places in South Carolina.


In Irmo, there are 72.7 days annually when the high temperature is over 90°, which is one of the hottest places in South Carolina.


In Irmo, there are 68.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in South Carolina.


In Irmo, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in South Carolina.


August is the wettest month in Irmo with 5.5 inches of rain, and the driest month is April with 2.7 inches. The wettest season is Autumn with 32% of yearly precipitation and 22% occurs in Summer, which is the driest season.


The annual rainfall of 44.8 inches in Irmo means that it is drier than most places in South Carolina.


An annual snowfall of 0.9 inches in Irmo means that it is about average compared to other places in South Carolina.



January is the snowiest month in Irmo with 0.6 inches of snow, and 1 month of the year have significant snowfall.


CLIMATE MAP
  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Irmo    9 Reviews
    A hidden gem in an up and coming state. - 2/8/2019
    I grew up in near Annapolis MD but lived in both Savannah and Atlanta GA for twenty years. Moved to Columbia in 2009 working in IT for SC Dept of Education. Had an... Read More

    Start Your Review of Irmo


    Evenly situated between the beach and the mountain - 6/11/2012
    ...there's something for... Read More

    Moving to Irmo - 4/28/2010
    Any thing I should know about... Read More


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