Grimes Lake Weather Forecast

    • 45
    • 76

    Mostly Cloudy

    • 44
    • 64

    Slight Chance Rain Showers

    • 44
    • 63

    Slight Chance Rain Showers

    • 44
    • 65

    Partly Sunny

    • 42
    • 70

    Mostly Sunny

    • 46
    • 69

    Partly Sunny

Today 10 May Waterville Plateau

Mostly cloudy. Highs in the 70s. Southwest wind 5 to 15 Mph with Gusts up to 30 Mph in the afternoon.

Tonight 10 May Waterville Plateau

Mostly cloudy. Lows in the 40s. Breezy. West wind 10 to 20 Mph with Gusts up to 30 Mph decreasing to 5 to 15 Mph with Gusts up to 20 Mph overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grimes Lake Temperature Statistics

May Temperature

Ephrata, Ephrata Municipal Airport (29.2 miles)

  • Lowest 4 May, 2025

    41.6 °F

  • Average May

    61.2 °F

  • Highest 2 May, 2025

    82.7 °F

Climate (2020–Present)

Ephrata, Ephrata Municipal Airport (29.2 miles)

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  • Average Low 2020–2025

    42 °F

  • Average 2020–2025

    53.1 °F

  • Average High 2020–2025

    63.3 °F
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