Humid subtropical
Irmo, South Carolina
Richland County, South Carolina · Population 12k · 351 ft elevation
Living in Irmo
Irmo has a humid subtropical climate: very hot summers (July highs around 90°F) and chilly winters (January lows around 29°F).
Precipitation is wet at about 46″ a year, and it sees only a dusting of snow (1″ a season).
Skies are sunny (68% of possible sunshine). Humidity is a fact of life: about 81 muggy days a year.
Air quality is moderate: a median AQI of 47 and virtually no unhealthy-air days.
Irmo at a glance
- Population
- 12k
- Elevation
- 351 ft
- Average daily high
- 73°F70th percentile
- Average daily low
- 48°F62th percentile
- Annual precipitation
- 46″60th percentile
- Annual snowfall
- 1″25th percentile
- Sunshine hours per year
- 3,018 hrs68th percentile
- Median AQI
- 4776th percentile
- Median home value
- $193k32th percentile
- Median rent
- $1,412/mo63th percentile
- Median household income
- $85k61th percentile
- Property tax rate
- 0.62%18th percentile
- Top state income-tax rate
- 6.0%
- Sales tax (state + local)
- 7.5%
- Unemployment rate
- 8.3%
- Homes with broadband
- 94%69th percentile
- Walkability index
- 7.329th percentile
- Average commute
- 25 min
- Math proficiency (8th grade)
- 50%58th percentile
- Reading proficiency (8th grade)
- 57%
- Violent crime rate
- 245 per 100k63th percentile
- Property crime rate
- 1,487 per 100k
- Overall natural-hazard risk
- 9357th percentile
- Outdoor access
- 2827th percentile
- Public land within 10 miles
- 1%
- Public land within 30 miles
- 2%
- Mountain relief within 30 miles
- 361 ft
Climate by month
| Month | High | Low | Precipitation | Snow | Sunshine |
|---|---|---|---|---|---|
| Jan | 54°F | 29°F | 3.9″ | 0.8″ | 203 hrs |
| Feb | 58°F | 31°F | 3.5″ | — | 181 hrs |
| Mar | 65°F | 37°F | 4.0″ | — | 230 hrs |
| Apr | 74°F | 45°F | 2.9″ | — | 270 hrs |
| May | 81°F | 55°F | 3.5″ | — | 299 hrs |
| Jun | 87°F | 64°F | 4.1″ | — | 317 hrs |
| Jul | 90°F | 68°F | 4.2″ | — | 317 hrs |
| Aug | 88°F | 68°F | 5.1″ | — | 295 hrs |
| Sep | 83°F | 60°F | 3.8″ | — | 258 hrs |
| Oct | 74°F | 47°F | 3.3″ | — | 242 hrs |
| Nov | 64°F | 36°F | 3.2″ | — | 215 hrs |
| Dec | 56°F | 31°F | 4.2″ | — | 190 hrs |
Near Irmo
- Lake Murray of Richland, SC · 7.1k
- Seven Oaks, SC · 16k
- St. Andrews, SC · 21k
- Lexington, SC · 24k
- Oak Grove, SC · 12k
- West Columbia, SC · 18k
- Springdale, SC · 2.7k
- Red Bank, SC · 11k
Largest places in South Carolina
- Charleston, SC · 152k
- Columbia, SC · 138k
- North Charleston, SC · 117k
- Mount Pleasant, SC · 93k
- Rock Hill, SC · 75k
- Greenville, SC · 72k
- Summerville, SC · 51k
- Goose Creek, SC · 47k
Sources: NOAA climate normals, NASA POWER, EPA air quality, U.S. Census Bureau, FEMA, FBI, EPA walkability and EDFacts. Methodology