Lake Hartwell State Park Weather Forecast

    • 72
    • 92

    Slight Chance Rain Showers

    • 74
    • 96

    Mostly Sunny

    • 74
    • 97

    Chance Thunderstorms

    • 72
    • 97

    Chance Thunderstorms

    • 71
    • 92

    Rain Showers Likely

    • 71
    • 90

    Chance Thunderstorms

    • 72
    • 93

    Chance Thunderstorms

Today 6 Jul Greater Oconee

Sunny with isolated Showers and Thunderstorms. Highs in the lower 90s. North Winds around 5 Mph. Chance of rain 20 percent.

Tonight 6 Jul Greater Oconee

Mostly clear. Lows in the lower 70s. Northwest Winds around 5 Mph.

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Lake Hartwell State Park Temperature Statistics

July Temperature

Clemson, Clemson-Oconee County Airport (14.9 miles)

  • Lowest 1 July, 2025

    71.1 °F

  • Average July

    79.8 °F

  • Highest 1 July, 2025

    90 °F

Climate (2020–Present)

Clemson, Clemson-Oconee County Airport (14.9 miles)

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  • Average Low 2020–2025

    53.6 °F

  • Average 2020–2025

    62.5 °F

  • Average High 2020–2025

    72.2 °F
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