South Carolina State Climatology Office

Climate Data

South Carolina Climate

South Carolina County Weather Atlas

Monthly Climatic Data for South Carolina

Monthly Temperature Extremes

Record Maximum Temperatures by County

Record Minimum Temperatures by County

Monthly Precipitation Extremes

24 Hour Maximum Precipitation

24 Hour Maximum Precipitation by County

South Carolina Snow Events

Tornado Statistics

South Carolina flag

Quick Links

Weekly & Annual Weather Report

Sassafras Mountain Weather Observations

Request Data

Climate and Natural Resources Workshops

South Carolina Temperature and Precipitation Trends 1901-2005

South Carolina Temperature and Precipitation Trends 1901-2010

South Carolina Temperature and Precipitation Trends 1901-2015

Site Map

Download latest FREE Adobe® Reader®

Download latest FREE Java™

Summer pictureTornado pictureHugo pictureBeach picture
South Carolina State Climatology Office
WelcomeClimateHurricanesDroughtResearchLinksEducation

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

    State Climatology Office Welcome ¦ Contact Info ¦  Site Map
    Columbia, SC 29202

    Return to top



    State Climatology OfficeWelcome ¦ Contact Info ¦ Site Map
    Columbia, SC 29202E-mail:    malsickm@dnr.sc.gov
    File: county_sumter.php
    Last modified: Mar 30 2025 at 07:06
    Data:  /climate/sco/ClimateData/countyData/
    Host: dnr.sc.gov
    Home Dir: /climate/sco/

    Browser: Netscape  5
    W x H:  1280 x 720