Grimes Lake Weather Forecast

    • 45
    • 70

    Mostly Sunny

    • 47
    • 73

    Partly Cloudy

    • 52
    • 76

    Mostly Cloudy

    • 53
    • 79

    Partly Sunny

    • 54
    • 82

    Mostly Sunny

    • 54
    • 84

    Sunny

    • 53
    • 85

    Mostly Sunny

Today 29 Apr Waterville Plateau

Sunny. Highs in the mid 60s to lower 70s.

Tonight 29 Apr Waterville Plateau

Mostly clear. Lows in the mid to upper 40s.

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  • Temperature Real-Time

Grimes Lake Temperature Statistics

April Temperature

Ephrata, Ephrata Municipal Airport (29.2 miles)

  • Lowest 17 April, 2026

    28.7 °F

  • Average April

    51.8 °F

  • Highest 6 April, 2026

    77.6 °F

Climate (2021–Present)

Ephrata, Ephrata Municipal Airport (29.2 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    63.9 °F
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