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South Carolina Temperature and Precipitation Trends 1901-2005

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South Carolina State Climatology Office
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Dorchester County

30 Year Climate Normals (Summerville)
Max Temp. Mean Temp. Min Temp. Precip CDD HDD
1971-2000 75.7 F 64.1 F 52.4 F 46.9 Inches 2028 2352
1981-2010 76.9 F 64.4 F 52.0 F 52.95 Inches 2096 2291

Temperature Summary (1930-2016)


Highest Maximum: 107 F, September 21, 1925; Summerville 4W
Lowest Minimum: -5 F, February 14, 1899: Summerville 4W

Precipitation Summary (1898-2016)


Highest Daily Rainfall: 10.23 Inches, August 12, 1940; Summerville 4W
Annual Average Rainfall: 50.27 Inches
Wettest Year: 74.93 Inches, 1994
Driest Year: 27.66 Inches, 1954
Highest Daily Snowfall: 15 Inches,February 10, 1973

Severe Weather Events

Tornado
17 Tornadoes (1950-2016)
Tornado damage: $3.055 million
4 tornado related injuries
0 tornado related fatalities

Thunderstorm Winds
287 Wind events (winds exceeding 50 knots or 58 miles per hour, 1955-2016)

Hail (>1.0 inch)
78 Hail events (1955-2016)

Lightning
14 Lightning events (1993-2016)
Lightning damage: $20,500
0 Lightning related fatalities

Flood
51 Flood Events (1993-2016)

Snow and Ice
8 Winter frozen precipitation events (1993-2016)

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