Horry County

30 Year Climate Normals (Conway)
Max Temp. Mean Temp. Min Temp. Precip CDD HDD
1971-2000 75.1 F 63.8 F 52.4 F 53.27 Inches 1995 2415
1981-2010 75.4 F 64.4 F 53.4 F 52.07 Inches 2136 2352
1991-2020 75.3 F 64.5 F 53.8 F 55.21 Inches 2141 2287

Temperature Records (1945-2020)


Highest Maximum: 107 F, June 28, 1952; Loris 2 S
Lowest Minimum: 2 F, January 21, 1985, February 12, 1973; Loris 2 S

Precipitation Records (1893-2020)


Highest Daily Rainfall (COOP): 14.80 Inches, September 16, 1999; Myrtle Beach
Highest Daily Rainfall (CoCoRaHS): 11.68 inches, September 17, 2018; Loris 2.8 WSW
Annual Average Rainfall: 51.20 Inches; Conway
Wettest Year: 1999, 77.36 Inches; Loris 2 S (July 1999 data missing)
Driest Year: 1954, 31.81 inches; Conway
Highest Daily Snowfall: 12.0 Inches, December 24, 1989; Conway

Severe Weather Events- Countywide

Tornado

55 Tornadoes (1950-2020)
  • E/F0: 20
  • E/F1: 23
  • E/F2: 10
  • E/F3: 2
  • E/F4: 0
  • Period Of Record: 1950-2020
    Strongest: F3 on August 17, 1965 and November 24, 1967
    Longest Path: 10.5 miles on December 1, 1967
    Widest Path: 353 yards on March 28, 1994
    0 tornado related fatalities
    104 tornado related injuries
    Total Damage Costs: $22.2 Million

    Thunderstorm, High, and Strong Wind Events

    206 Total Wind Events (winds exceeding 50 knots or 58 miles per hour, 1955-2020)
  • 256 Thunderstorm wind events
  • 0 High wind events
  • 4 Strong wind events
  • 0 Wind-related fatalities
    15 Wind-related injuries
    Total Damage Costs: $3.527 Million

    Hail (>1.0 inch)


    199 Hail events (1955-2020)

    Lightning


    37 Lightning events (1993-2020)
    1 Lightning related fatality
    10 Lightning related injuries
    Total Damage Costs: $1.622 Million

    Flood

    97 Total Flood Events (1993-2020)
  • 16 Flood Events
  • 19 Coastal Flood Events
  • 62 Flash Flood Events
  • 4 Flood-related fatalities
    0 Flood-related injuries
    Total Damage Costs: $21.983 Million

    Winter Weather-Related Events

    8 Total Winter Weather-Related Events
  • 6 Winter storm events
  • 0 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