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Weather in Harleyville, SC · National Weather Service + NOAA

Harleyville has some of South Carolina’s warmest summers

Harleyville has mild winters and hot summers, with plenty of rain. A typical July afternoon reaches 93°, a January night drops to 36°. Normal November highs come to 69°, and lows to 44°.

Winter 61°/38°Spring 77°/52°Summer 91°/70°Fall 77°/55°
Right now
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Sunrise 6:43 am · sunset 5:27 pm

Getting the latest forecast from the National Weather Service…

What stands out about Harleyville’s weather

Read from 30 years of NOAA records. Each one opens the full story on the Climate page.

Climate →
Warmer summers than most of South CarolinaJuly afternoons average 93°, warmer than 457 of 475 South Carolina towns.Plenty of 90° daysAbout 78 days a year reach 90°.Air-conditioning countryMore cooling degree days than 88% of U.S. towns.
A normal year

Where today sits in Harleyville’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
61° / 38°
Snow is rare
Spring
77° / 52°
Last frost around Mar 22
Summer
91° / 70°
78 days reach 90° in a normal year
Fall now
77° / 55°
First frost around Nov 12
8 daysuntil the usual first frost (Nov 12)
Best months to be outside
MarAprOctNov
Highs of 62–84° and lows of 40° or more
When is it wettest?August, with 5.8 inches.Is it warmer than it used to be?+1.2° vs. the 20th century.What is each month like?Highs, lows, rain and snow for all 12.

Weather talk

Road reports, first frosts and storm memories from neighbors in Harleyville.

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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Harleyville itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Holly Hill 1 Sw, SC (8 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.