Coffeepot Lake Weather Forecast

    • 38
    • 65

    Mostly Sunny

    • 43
    • 70

    Mostly Sunny

    • 45
    • 74

    Mostly Sunny

    • 44
    • 78

    Mostly Sunny

    • 42
    • 69

    Mostly Sunny

    • 49
    • 78

    Partly Sunny

    • 51
    • 80

    Partly Sunny

Today 4 May Upper Columbia Basin

Sunny. Highs in the 60s. Northwest wind 5 to 15 Mph with Gusts up to 30 Mph.

Tonight 4 May Upper Columbia Basin

Mostly clear. Lows in the upper 30s to lower 40s. Northwest wind 5 to 15 Mph with Gusts up to 25 Mph.

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Coffeepot Lake Temperature Statistics

May Temperature

Grant County Airport (39.8 miles)

  • Lowest 1 May, 2025

    37.9 °F

  • Average May

    62.7 °F

  • Highest 2 May, 2025

    81 °F

Climate (2020–Present)

Grant County Airport (39.8 miles)

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  • Average Low 2020–2025

    41 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    64.1 °F
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