Irmo, SC Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Irmo, a town in Lexington County, South Carolina.
This Afternoon
80°F
Mostly Sunny
Mostly sunny, with a high near 80. East wind around 8 mph.
7-day forecast for Irmo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 80°F | Mostly Sunny | 8 mph E | 0% |
| Tonight | 58°F | Mostly Clear | 3 to 7 mph E | 1% |
| Wednesday | 81°F | Patchy Fog then Mostly Cloudy | 5 to 9 mph SE | 7% |
| Wednesday Night | 64°F | Chance Light Rain | 3 to 8 mph SE | 52% |
| Thursday | 80°F | Chance Light Rain then Chance Showers And Thunderstorms | 6 mph S | 42% |
| Thursday Night | 64°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 2 mph S | 62% |
| Friday | 78°F | Showers And Thunderstorms Likely | 2 to 6 mph SW | 63% |
| Friday Night | 54°F | Mostly Clear | 5 mph NW | 12% |
| Saturday | 74°F | Sunny | 5 mph N | 6% |
| Saturday Night | 48°F | Partly Cloudy | 3 mph N | 5% |
| Sunday | 70°F | Mostly Sunny | 5 mph N | 7% |
| Sunday Night | 45°F | Partly Cloudy | 3 mph W | 13% |
| Monday | 69°F | Sunny then Slight Chance Light Rain | 3 to 7 mph NW | 15% |
| Monday Night | 42°F | Slight Chance Light Rain | 5 mph W | 15% |
Forecast source: National Weather Service (api.weather.gov) for Irmo (34.102, -81.196). Updated through the day.
Growing snapshot for Irmo
Last spring frost
Mar 25
First fall frost
Nov 7
Growing season
229 days
Hardiness zone
8b
More local growing data for Irmo: nearby ZIP 29212 weather · frost dates · planting calendar · South Carolina frost dates
Nearby towns & communities
Cayce
Chapin
Edmund
Fairview Crossroads
Gaston
Gilbert
Lexington
Oak Grove
Pelion
Pine Ridge
Red Bank
South Congaree
Springdale
Summit
Swansea
West Columbia
White Knoll
All South Carolina locations ›
Climate data from the nearest NOAA station, Columbia, Sc (10.1 mi from Irmo). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.