Irmo and West Columbia have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Irmo | Metric | West Columbia |
|---|---|---|
| 212 days | Sunny daysclear or partly cloudy skies | 212 days |
| 43 in | Precipitationper year | 43 in |
| 118 days | Wet daysrain or snow per year | 119 days |
| 1 in | Snowfallper year | 1 in |
| 84 days | Hot daysabove 90 °F | 88 days |
| 61 days | Freezing nightsat or below 32 °F | 40 days |
| 72% | Humidityaverage relative | 71% |
| 63 °F | Average temperatureyear round | 65 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Irmo high | 56 | 60 | 68 | 77 | 83 | 89 | 92 | 91 | 86 | 76 | 66 | 58 |
| West Columbia high | 58 | 62 | 69 | 78 | 85 | 91 | 94 | 92 | 87 | 77 | 67 | 60 |
| Irmo low | 33 | 36 | 41 | 49 | 59 | 67 | 71 | 70 | 63 | 51 | 40 | 35 |
| West Columbia low | 36 | 38 | 45 | 52 | 61 | 69 | 72 | 71 | 66 | 54 | 43 | 38 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Irmo | 3.5 | 3.5 | 3.7 | 3.3 | 2.9 | 4.1 | 4.3 | 4.1 | 3.5 | 3.3 | 2.8 | 3.7 |
| West Columbia | 3.5 | 3.4 | 3.5 | 3.3 | 3.0 | 4.3 | 4.4 | 4.2 | 3.7 | 3.3 | 2.8 | 3.7 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Irmo | 17 | 14 | 18 | 19 | 19 | 17 | 18 | 18 | 18 | 20 | 19 | 17 |
| West Columbia | 17 | 14 | 18 | 19 | 19 | 17 | 18 | 18 | 18 | 20 | 19 | 17 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Irmo vs another city
- Irmo vs Lake Murray of Richland, SC
- Irmo vs Seven Oaks, SC
- Irmo vs St. Andrews, SC
- Irmo vs Lexington, SC
- Irmo vs Oak Grove, SC
- Irmo vs New York, NY
- Irmo vs Los Angeles, CA
- Irmo vs Chicago, IL
- Irmo vs Houston, TX
- Irmo vs Phoenix, AZ
- Irmo vs Philadelphia, PA
West Columbia vs another city
- West Columbia vs Oak Grove, SC
- West Columbia vs St. Andrews, SC
- West Columbia vs Cayce, SC
- West Columbia vs Seven Oaks, SC
- West Columbia vs Lexington, SC
- West Columbia vs Forest Acres, SC
- West Columbia vs New York, NY
- West Columbia vs Los Angeles, CA
- West Columbia vs Chicago, IL
- West Columbia vs Houston, TX
- West Columbia vs Phoenix, AZ
- West Columbia vs Philadelphia, PA
About this data
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).