Sinclair Lake Weather Forecast

    • 50
    • 73

    Partly Sunny

    • 49
    • 73

    Mostly Sunny

    • 50
    • 76

    Sunny

    • 55
    • 79

    Mostly Sunny

    • 61
    • 81

    Partly Sunny

    • 63
    • 80

    Chance Rain Showers

Today 26 Sep Rhea

Mostly sunny. Highs in the mid to upper 70s. Light Winds.

Tonight 26 Sep Rhea

Partly cloudy in the Evening, then becoming mostly clear. Lows in the lower 50s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sinclair Lake Temperature Statistics

September Temperature

Crossville, Crossville Memorial-Whitson Field Airport (24.2 miles)

  • Lowest 14 September, 2026

    64.7 °F

  • Average September

    77.7 °F

  • Highest 3 September, 2026

    95.6 °F

Climate (2021–2026)

Crossville, Crossville Memorial-Whitson Field Airport (24.2 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    57.4 °F

  • Average High 2021–2026

    67.3 °F
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