select pnm,lnm,st_cd,st_nm,cnty_id,dm,dm_date,dm_hist,avg_tmax_data,avg_tmin_data,avg_prcp_data,rec_hi_data,rec_lo_data,avg_sndp_data,x,y,ff,lf,fd,hz,er,hz_source,kg,hzd,clim_stn_nm,hz12,hz90, feels_like_min,feels_like_max,days_of_prcp,snow,cloud_cover,humidity,wind_speed from worldtg8_pm.pm_climate_points_namer where surl = 'harleyville' and st_surl='south-carolina' and iso_cc = 'US' and prim_loc in (1,2) Harleyville South Carolina Climate Data - Updated February 2026

Harleyville South Carolina Climate Data

Monthly Average Climate Data for Harleyville South Carolina

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January36.1 °F58.8 °F3.65 in.
February38.5 °F62.2 °F3.76 in.
March44.5 °F69.0 °F3.75 in.
April52.2 °F76.7 °F3.54 in.
May60.9 °F83.2 °F3.75 in.
June68.6 °F88.8 °F5.74 in.
July71.8 °F91.7 °F5.79 in.
August71.1 °F89.9 °F5.46 in.
September66.2 °F85.2 °F5.08 in.
October55.0 °F77.2 °F3.91 in.
November44.0 °F68.1 °F2.71 in.
December38.7 °F61.1 °F3.8 in.
Annual54 °F76 °F50.94 in.

Climate Data for Harleyville South Carolina

Average First Frost DateNov. 11 - Nov. 20
Average Last Frost DateMar. 11 - Mar. 20
Average Days With Frost20-30 Days
Plant Hardiness ZoneZone 8b : 15°F to 20°F
Plant Hardiness Zone - 2012Zone 8b : 15°F to 20°F
Current Drought ConditionsSevere Drought
Köppen Climate ClassificationCfa - Humid Subtropical Climate
2026 plantmaps.com