Sumter County

30 Year Climate Normals (Sumter)
Max Temp. Mean Temp. Min Temp. Precip CDD HDD
1971-2000 75.3 F 63.2 F 51.0 F 48.65 Inches 1923 2577
1981-2010 73.7 F 62.1 F 50.5 F 46.93 Inches 1797 2844
1991-2020 73.5 F 62.1 F 50.7 F 48.83 Inches 1796 2821

Temperature Records (1922-2020)


Highest Maximum: 108 F, September 4, 1925; Wedgefield
Lowest Minimum: 2 F, January 21, 1985; Sumter

Precipitation Records (1945-2020)


Highest Daily Rainfall (COOP): 10.67 inches, October 4, 2015; Sumter
Highest Daily Rainfall (CoCoRaHS): 10.42 inches, October 4, 2015; Sumter 0.2 NE
Annual Average Rainfall: 47.51 Inches
Wettest Year: 1959, 70.69 Inches; Sumter
Driest Year: 1954, 27.71 inches; Sumter Shaw AFB
Highest Daily Snowfall: 21.0 Inches, February 9, 1973: Wedgefield

Severe Weather Events- Countywide

Tornado

27 Tornadoes (1950-2020)
  • E/F0: 14
  • E/F1: 7
  • E/F2: 3
  • E/F3: 1
  • E/F4: 0
    • Period Of Record: 1950-2020
    Strongest: EF3 on May 15, 2007
    Longest Path: 10.8 miles on April 28, 2011
    Widest Path: 500 yards on September 7, 2004
    1 tornado related fatality
    8 tornado related injuries
    Total Damage Costs: $4.7 Million

    Thunderstorm, High, and Strong Wind Events

    353 Total Wind Events (winds exceeding 50 knots or 58 miles per hour, 1955-2020)
  • 346 Thunderstorm wind events
  • 4 High wind events
  • 3 Strong wind events
    • 1 Wind-related fatality
    2 Wind-related injuries
    Total Damage Costs: $3.22 Million

    Hail (>1.0 inch)


    61 Hail events (1955-2020)

    Lightning


    6 Lightning events (1993-2020)
    0 Lightning related fatalities
    0 Lightning related injuries
    Total Damage Costs: $1.659 Million

    Flood

    22 Total Flood Events (1993-2020)
  • 2 Flood Events
  • 0 Coastal Flood Events
  • 20 Flash Flood Events
    • 0 Flood-related fatalities
    0 Flood-related injuries
    Total Damage Costs: $66,600

    Winter Weather-Related Events

    22 Total Winter Weather-Related Events
  • 7 Winter storm events
  • 4 Ice storm events
  • 7 Heavy snow events
  • 0 Frost/freeze events
  • 4 Winter weather events
  • 0 Cold/wind chill events
    • 0 Winter weather-related fatalities
    1 Winter weather-related injury
    Total Damage Costs: $0