Lake Hartwell State Park Weather Forecast

    • 45
    • 72

    Sunny

    • 48
    • 77

    Sunny

    • 47
    • 75

    Sunny

    • 48
    • 76

    Sunny

    • 48
    • 75

    Sunny

    • 46
    • 70

    Sunny

Today 19 Oct Greater Oconee

Sunny. Highs in the lower 70s. Northeast Winds 5 to 10 Mph.

Tonight 19 Oct Greater Oconee

Clear. Lows in the mid 40s. East Winds around 5 Mph, becoming northwest around 5 Mph after midnight.

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Lake Hartwell State Park Temperature Statistics

October Temperature

Clemson, Clemson-Oconee County Airport (14.9 miles)

  • Lowest 7 October, 2026

    55 °F

  • Average October

    69.6 °F

  • Highest 2 October, 2026

    86 °F

Climate (2021–2026)

Clemson, Clemson-Oconee County Airport (14.9 miles)

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  • Average Low 2021–2026

    53.7 °F

  • Average 2021–2026

    62.9 °F

  • Average High 2021–2026

    72.6 °F
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