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.
Summer High: the July high is around 93 degrees
Winter Low: the January low is 30
Rain: averages 45 inches of rain a year
Snow: averages 1 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Irmo is 7.2 (10=best), which means it is less comfortable than most places in South Carolina.
7.2 / 10
May, October and April are the most pleasant months in Irmo, while July and August are the least comfortable months.