Oconee County

30 Year Climate Normals (Walhalla)
Max Temp. Mean Temp. Min Temp. Precip CDD HDD
1971-2000 72.4 F 58.8 F 45.1 F 60.65 Inches 1302 3567
1981-2010 71.8 F 59.5 F 47.1 F 57.81 Inches 1422 3441
1991-2020 71 F 59.2 F 47.7 F 61.1 Inches 1396 3483

Temperature Records (1896-2020)


Highest Maximum: 108 F, September 7, 1925; Walhalla
Lowest Minimum: -8 F, January 21, 1985; Long Creek

Precipitation Records (1948-2020)


Highest Daily Rainfall (COOP): 9.65 Inches, September 20, 1924; Walhalla
Highest Daily Rainfall (CoCoRaHS): 8.92 inches, September 21, 2009; Walhalla 1.5 NW
Annual Average Rainfall: 60.32 Inches; Walhalla
Wettest Year: 2018, 123.45 inches; Jocassee 8 WNW
Driest Year: 2016, 26.41 Inches; Clemson Oconee County Airport
Highest Daily Snowfall: 15 Inches, January 7, 1988; Long Creek

Severe Weather Events- Countywide

Tornado

29 Tornadoes (1950-2020)
  • E/F0: 16
  • E/F1: 6
  • E/F2: 5
  • E/F3: 2
  • E/F4: 0
  • Period Of Record: 1950-2020
    Strongest: F3 on March 27, 1994 and EF3 on April 13, 2020
    Longest Path: 30 miles on January 14, 1995
    Widest Path: 900 yards on June 26, 1994
    0 tornado related fatalities
    15 tornado related injuries
    Total Damage Costs: $7.4 Million

    Thunderstorm, High, and Strong Wind Events

    337 Total Wind Events (winds exceeding 50 knots or 58 miles per hour, 1955-2020)
  • 295 Thunderstorm wind events
  • 38 High wind events
  • 4 Strong wind events
  • 1 Wind-related fatality
    4 Wind-related injuries
    Total Damage Costs: $1.686 Million

    Hail (>1.0 inch)


    116 Hail events (1955-2020)

    Lightning


    13 Lightning events (1993-2020)
    0 Lightning related fatalities
    4 Lightning related injuries
    Total Damage Costs: $751,000

    Flood

    30 Total Flood Events (1993-2020)
  • 11 Flood Events
  • 0 Coastal Flood Events
  • 19 Flash Flood Events
  • 0 Flood-related fatalities
    0 Flood-related injuries
    Total Damage Costs: $1.934 Million

    Winter Weather-Related Events

    165 Total Winter Weather-Related Events
  • 23 Winter storm events
  • 13 Ice storm events
  • 30 Heavy snow events
  • 3 Frost/freeze events
  • 80 Winter weather events
  • 16 Cold/wind chill events
  • 2 Winter weather-related fatalities
    0 Winter weather-related injuries
    Total Damage Costs: $117.250 Million