Colleton County

30 Year Climate Normals (Walterboro)
Max Temp. Mean Temp. Min Temp. Precip CDD HDD
1971-2000 75.8 F 63.9 F 52.1 F 49.29 Inches 2003 2371
1981-2010 76.0 F 64.1 F 52.2 F 47.25 Inches 2055 2366
1991-2020 75.3 F 64.1 F 52.8 F 51.42 Inches 2016 2322

Temperature Records (1903-2020)


Highest Maximum: 107 F, August 17, 1954; Walterboro
Lowest Minimum: 0 F, January 21, 1985; Walterboro

Precipitation Records (1903-2020)


Highest Daily Rainfall (COOP): 11.64 Inches, November 2, 1969; Edisto Beach State Park
Highest Daily Rainfall (CoCoRaHS): 11.66 inches, October 8, 2016; Green Pond 1.3 S
Annual Average Rainfall: 49.86 Inches
Wettest Year: 1959, 84.12 inches; Walterboro 1 SW
Driest Year: 2011, 27.98 Inches; Walterboro 1 SW
Highest Daily Snowfall: 7.0 inches, February 13, 2010; Smoaks 0.1 SE (CoCoRaHS)

Severe Weather Events- Countywide

Tornado

27 Tornadoes (1950-2020)
  • E/F0: 5
  • E/F1: 21
  • E/F2: 1
  • E/F3: 0
  • E/F4: 0
  • Period Of Record: 1950-2020
    Strongest: EF2 on April 13, 2020
    Longest Path: 12.5 miles on May 4, 2017
    Widest Path: 440 yards on May 4, 2017
    0 tornado related fatalities
    11 tornado related injuries
    Total Damage Costs: $540,000

    Thunderstorm, High, and Strong Wind Events

    673 Total Wind Events (winds exceeding 50 knots or 58 miles per hour, 1955-2020)
  • 615 Thunderstorm wind events
  • 21 High wind events
  • 37 Strong wind events
  • 0 Wind-related fatalities
    0 Wind-related injuries
    Total Damage Costs: $1.043

    Hail (>1.0 inch)


    64 Hail events (1955-2020)

    Lightning


    5 Lightning events (1993-2020)
    0 Lightning related fatalities
    0 Lightning related injuries
    Total Damage Costs: $118,000

    Flood

    36 Total Flood Events (1993-2020)
  • 7 Flood Events
  • 15 Coastal Flood Events
  • 14 Flash Flood Events
  • 0 Flood-related fatalities
    0 Flood-related injuries
    Total Damage Costs: $2.054 Million

    Winter Weather-Related Events

    28 Total Winter Weather-Related Events
  • 0 Winter storm events
  • 8 Ice storm events
  • 15 Heavy snow events
  • 2 Frost/freeze events
  • 1 Winter weather event
  • 2 Cold/wind chill events
  • 0 Winter weather-related fatalities
    0 Winter weather-related injuries
    Total Damage Costs: $78,500