Lake Hartwell State Park Weather Forecast

    • 57
    • 78

    Mostly Cloudy

    • 59
    • 83

    Slight Chance Rain Showers

    • 53
    • 80

    Chance Thunderstorms

    • 52
    • 73

    Sunny

    • 55
    • 78

    Mostly Sunny

    • 51
    • 78

    Mostly Sunny

    • 56
    • 78

    Mostly Sunny

Today 9 May Greater Oconee

Mostly sunny. Near steady Temperatures in the upper 70s. Southwest Winds around 10 Mph.

Tonight 9 May Greater Oconee

Mostly cloudy. Lows in the mid 50s. West Winds 5 to 10 Mph.

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Lake Hartwell State Park Temperature Statistics

May Temperature

Clemson, Clemson-Oconee County Airport (14.9 miles)

  • Lowest 4 May, 2026

    46.9 °F

  • Average May

    63.4 °F

  • Highest 5 May, 2026

    79 °F

Climate (2021–Present)

Clemson, Clemson-Oconee County Airport (14.9 miles)

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  • Average Low 2021–2026

    53.6 °F

  • Average 2021–2026

    62.8 °F

  • Average High 2021–2026

    72.4 °F
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