Grimes Lake Weather Forecast

    • 46
    • 76

    Slight Chance Thunderstorms

    • 55
    • 81

    Mostly Sunny

    • 50
    • 86

    Breezy

    • 48
    • 73

    Partly Sunny

    • 50
    • 70

    Chance Rain Showers

    • 51
    • 73

    Slight Chance Rain Showers

Today 29 May Waterville Plateau

Mostly cloudy in the morning then clearing. A chance of Thunderstorms in the morning. A chance of rain Showers. Highs in the lower 70s to lower 80s. Windy. West wind 15 to 25 Mph with Gusts up to 35 Mph. Chance of precipitation 20 percent.

Tonight 29 May Waterville Plateau

Mostly clear. Lows in the mid 40s to lower 50s. Windy. West wind 20 to 30 Mph with Gusts up to 40 Mph, becoming northwest 5 to 15 Mph with Gusts up to 25 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 19 May, 2025

    36.6 °F
  • Average May

    61 °F
  • Highest 25 May, 2025

    86 °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

    63.4 °F
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