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Weather in Summerville, SC · National Weather Service + NOAA

Summerville has milder winters than most of South Carolina

Summerville has mild winters and hot summers, with plenty of rain. A typical July afternoon reaches 92°, a January night drops to 37°, and snow is almost unheard of. A typical November afternoon reaches 69°, and nights fall to 45°.

Winter 62°/39°Spring 77°/53°Summer 91°/70°Fall 78°/55°
Right now
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Sunrise 6:40 am · sunset 5:27 pm

Getting the latest forecast from the National Weather Service…

What stands out about Summerville’s weather

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

Climate →
Milder winters than most of South CarolinaJanuary nights average 37°, milder than 427 of 475 South Carolina towns.Snow is rareAbout 0.3 inches in a normal year, so most winters see none.Plenty of 90° daysAbout 72 days a year reach 90°.Air-conditioning countryMore cooling degree days than 88% of U.S. towns.
A normal year

Where today sits in Summerville’s year

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

Full climate →
Winter
62° / 39°
Snow is rare
Spring
77° / 53°
Last frost around Mar 22
Summer
91° / 70°
72 days reach 90° in a normal year
Fall now
78° / 55°
First frost around Nov 12
9 daysuntil the usual first frost (Nov 12)
Best months to be outside
MarAprOctNov
Highs of 62–84° and lows of 40° or more
How much snow does Summerville get?Almost none.When is it wettest?August, with 6.3 inches.Is it warmer than it used to be?+1.3° vs. the 20th century.

Weather talk

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

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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 Summerville itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Givhans Ferry 2 Ese, SC (10 mi, snow) and Summerville 4w, SC (4 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.