Lake Hartwell State Park Weather Forecast

    • 59
    • 68

    Rain Showers

    • 42
    • 69

    Rain

    • 28
    • 50

    Mostly Sunny

    • 29
    • 49

    Mostly Sunny

    • 38
    • 57

    Partly Sunny

    • 35
    • 56

    Chance Rain

    • 27
    • 48

    Partly Sunny

Today 9 Jan Greater Oconee

Rain likely. Highs in the mid 60s. South Winds around 5 Mph. Chance of rain 70 percent.

Tonight 9 Jan Greater Oconee

Showers. Patchy fog. A slight chance of Thunderstorms after midnight. Lows in the upper 50s. Light and variable Winds, becoming northeast around 5 Mph after midnight. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Hartwell State Park Temperature Statistics

January Temperature

Clemson, Clemson-Oconee County Airport (14.9 miles)

  • Lowest 1 January, 2026

    37.9 °F

  • Average January

    51.1 °F

  • Highest 7 January, 2026

    70 °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

    62.6 °F

  • Average High 2021–2026

    72.2 °F
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