Summerville, SC Weather & Climate Normals
What a normal year in Summerville actually looks like
On the 30-year record NOAA keeps for Summerville, SC, the comfort score comes out to 58/100, strongly seasonal: Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. Only 6 months a year land in the 55–75°F range this site treats as mild.
How much Summerville's weather actually swings
Average temperatures in Summerville run from 46°F in Jan up to 81°F in Jul, a 34.1°F seasonal swing, a middling gap by national standards.
Summerville, month by month
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| Jan | 58°F | 35°F | 3.63in |
| Feb | 62°F | 37°F | 3.27in |
| Mar | 69°F | 42°F | 3.89in |
| Apr | 76°F | 50°F | 3.45in |
| May | 82°F | 59°F | 3.52in |
| Jun | 87°F | 67°F | 5.6in |
| Jul | 90°F | 71°F | 6.78in |
| Aug | 90°F | 70°F | 6.17in |
| Sep | 85°F | 65°F | 5.88in |
| Oct | 77°F | 53°F | 4.12in |
| Nov | 68°F | 42°F | 2.97in |
| Dec | 61°F | 37°F | 3.42in |
If you're timing a visit, Mar, Apr, May, Sep, Oct, and Nov are Summerville's mildest stretch; if you're moving there, you should plan around Jul's heat and Jan's cold instead.
How wet Summerville actually gets
Summerville averages 52.7in of precipitation a year across roughly 0 days with measurable rain or snow; the nearest NOAA station does not record snowfall, so no snow figure is shown rather than guessed.
Summerville against the rest of the country
Out of 4876 cities scored here, Summerville comes in at 604; within SC alone it ranks 1 of 66. Population is about 52,625.
Checking the actual forecast
These figures come from Summerville 4w, SC US, the NOAA station 3.7 miles from Summerville, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is