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 |
| 1991-2020 |
75.3 F |
63.8 F |
52.4 F |
52.7 Inches |
1988 |
2385 |
Temperature Records (1930-2020)
Highest Maximum: 107 F, September 21, 1925; Summerville 4W
Lowest Minimum: -5 F, February 14, 1899: Summerville 4W
Precipitation Records (1899-2020)
Highest Daily Rainfall (COOP): 10.23 Inches, August 12, 1940; Summerville 4W
Highest Daily Rainfall (CoCoRaHS): 12.9 inches, October 8, 2016; Reevesville 1.0 SSE
Annual Average Rainfall: 50.27 Inches
Wettest Year: 2015, 76.49 inches; Summerville 4 W
Driest Year: 1954, 27.66 Inches; Summerville 4 W
Highest Daily Snowfall: 15 Inches, February 10, 1973; Summerville 4 W
Severe Weather Events- Countywide
Tornado
20 Tornadoes (1950-2020)
-
- E/F0: 8
- E/F1: 12
- E/F2: 0
- E/F3: 0
- E/F4: 0
- Period Of Record: 1950-2019
- Longest Path: 3.12 miles on June 4, 2013
- Widest Path: 300 yards on May 12, 1974
- 0 tornado related fatalities
- 4 tornado related injuries
- Total Damage Costs: $3.1 Million
Thunderstorm, High, and Strong Wind Events
419 Total Wind Events (winds exceeding 50 knots or 58 miles per hour, 1955-2020)
-
- 386 Thunderstorm wind events
- 2 High wind events
- 31 Strong wind events
- 0 Wind-related fatalities
- 3 Wind-related injuries
- Total Damage Costs: $520,800
Hail (>1.0 inch)
91 Hail events (1955-2020)
Lightning
15 Lightning events (1993-2020)
0 Lightning related fatalities
3 Lightning related injuries
Total Damage Costs: $120,000
Flood
55 Total Flood Events (1993-2020)
-
- 11 Flood Events
- 0 Coastal Flood Events
- 44 Flash Flood Events
- 0 Flood-related fatalities
- 0 Flood-related injuries
- Total Damage Costs: $6.871 Million
Winter Weather-Related Events
23 Total Winter Weather-Related Events
-
- 0 Winter storm events
- 8 Ice storm events
- 12 Heavy snow events
- 1 Frost/freeze event
- 1 Winter weather event
- 1 Cold/wind chill event
- 0 Winter weather-related fatalities
- 0 Winter weather-related injuries
- Total Damage Costs: $0
