Irmo, SC Weather & Growing Conditions
Overnight
73°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 73. North wind around 1 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 73°F | Slight Chance Showers And Thunderstorms | 1 mph N | 24% |
| Saturday | 92°F | Mostly Sunny then Chance Showers And Thunderstorms | 1 to 6 mph NE | 30% |
| Saturday Night | 72°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 1 to 6 mph E | 30% |
| Sunday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 mph NE | 22% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 mph SE | 22% |
| Monday | 92°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 3 mph S | 47% |
| Monday Night | 72°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 3 mph E | 60% |
| Tuesday | 87°F | Showers And Thunderstorms Likely | 1 to 8 mph NE | 61% |
| Tuesday Night | 70°F | Showers And Thunderstorms Likely | 5 to 9 mph NE | 61% |
| Wednesday | 82°F | Partly Sunny then Chance Showers And Thunderstorms | 12 mph NE | 33% |
| Wednesday Night | 66°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 7 to 12 mph NE | 33% |
| Thursday | 81°F | Partly Sunny | 10 mph NE | 8% |
| Thursday Night | 65°F | Partly Cloudy | 5 to 9 mph NE | 8% |
| Friday | 81°F | Mostly Sunny | 9 mph N | 8% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Irmo, SC
Last spring frost
Mar 25
First fall frost
Nov 7
Growing season
229 days
Hardiness zone
8b
Explore more for Irmo, SC: full frost dates · planting calendar · South Carolina frost dates
Climate data from the nearest NOAA station, Columbia, Sc (10.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.