Heinlen Lake Weather Forecast

    • 69
    • 95

    Mostly Sunny

    • 70
    • 96

    Mostly Sunny

    • 71
    • 95

    Partly Sunny

    • 67
    • 86

    Mostly Cloudy

    • 64
    • 85

    Partly Sunny

    • 61
    • 81

    Partly Sunny

Today 24 Aug Waterville Plateau

Sunny in the Morning, becoming partly cloudy. Highs in the 90s. North wind 5 to 15 Mph in the Morning, becoming light and variable.

Tonight 24 Aug Waterville Plateau

Mostly clear. Lows in the mid 60s to lower 70s.

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Heinlen Lake Temperature Statistics

August Temperature

Ephrata, Ephrata Municipal Airport (29.8 miles)

  • Lowest 17 August, 2025

    51.7 °F

  • Average August

    76.6 °F

  • Highest 11 August, 2025

    100.7 °F

Climate (2020–Present)

Ephrata, Ephrata Municipal Airport (29.8 miles)

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  • Average Low 2020–2025

    42.1 °F

  • Average 2020–2025

    53.2 °F

  • Average High 2020–2025

    63.5 °F
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