Aiken County

30 Year Climate Normals (Aiken)
Max Temp. Mean Temp. Min Temp. Precip CDD HDD
1971-2000 77.2 F 64.1 F 50.9 F 52.4 Inches 2089 2413
1981-2010 75.0 F 63.5 F 52.1 F 51.15 Inches 2105 2642
1991-2020 75.3 F 64.1 F 52.9 F 50.77 Inches 2128 2502

Temperature Records (1893-2020)


Highest Maximum: 109 F August 22, 1983; Aiken 5 SE and September 14, 1897; Shaws Fork
Lowest Minimum: -11 F February 14, 1899; Shaws Fork

Precipitation Records (1899-2020) Calhoun Falls


Highest Daily Rainfall (COOP): 9.68 inches April 16, 1969
Highest Daily Rainfall (CoCoRaHS): 7.35 inches, October 4, 2015 at Salley 8.0 NE
Wettest Year: 1964, 71.36 inches; Aiken 5 SE
Driest Year: 1931, 22.18 inches; Aiken 5 SE
Highest Daily Snowfall: 15.0 inches, February 10, 1973; Aiken 5 SE

Severe Weather Events- Countywide

Tornado

40 Tornadoes (1950-2020)
  • E/F0: 19
  • E/F1: 10
  • E/F2: 9
  • E/F3: 2
  • E/F4: 0
    • Period Of Record: 1950-2019
    Strongest: EF3 on April 10, 2009
    Longest Path: 30.2 miles on May 8, 1978
    0 tornado related fatalities
    22 tornado related injuries
    Total Damage Costs: $6.5 million

    Thunderstorm, High, and Strong Wind Events

    372 Total Wind Events (winds exceeding 50 knots or 58 miles per hour, 1955-2020)
  • 364 Thunderstorm wind events
  • 6 High wind events
  • 2 Strong wind events
    • 0 Wind-related fatalities
    8 Wind-related injuries
    Total Damage Costs: $1.758 Million

    Hail (>1.0 inch)


    78 Hail events (1955-2020)

    Lightning


    10 Lightning events (1993-2020)
    1 Lightning related fatality
    5 Lightning related injuries
    Total Damage Costs: $639,300

    Flood

    21 Total Flood Events (1993-2020)
  • 7 Flood Events
  • 0 Coastal Flood Events
  • 14 Flash Flood Events
    • 0 Flood-related fatalities
    0 Flood-related injuries
    Total Damage Costs: $423,710

    Winter Weather-Related Events

    11 Total Winter Weather-Related Events
  • 5 Winter storm events
  • 4 Ice storm events
  • 0 Heavy snow events
  • 0 Frost/freeze events
  • 2 Winter weather events
  • 0 Cold/wind chill events
    • 0 Winter weather-related fatalities
    0 Winter weather-related injuries
    Total Damage Costs: $0