Irmo South Carolina Climate Data

Monthly Average Climate Data for Irmo South Carolina

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January1.4 °C13.3 °C101.6 mm
February2.7 °C15.3 °C94.74 mm
March6.2 °C19.5 °C107.7 mm
April10.8 °C24.2 °C77.22 mm
May15.8 °C28.2 °C83.06 mm
June20.2 °C31.6 °C122.43 mm
July21.9 °C33.3 °C107.19 mm
August21.5 °C32.4 °C124.97 mm
September18.3 °C29.7 °C107.95 mm
October11.8 °C24.4 °C96.27 mm
November5.8 °C18.8 °C89.66 mm
December2.7 °C14.6 °C104.14 mm
Annual11.6 °C23.8 °C1216.93 mm

Climate Data for Irmo South Carolina

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost40-50 Days
Plant Hardiness Zone - 2023Zone 8b : -9.4°C to -6.7°C
Plant Hardiness Zone - 2012Zone 8a : -12.2°C to -9.4°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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