Clyde Holliday State Park Weather Forecast

    • 53
    • 90

    Becoming Sunny

    • 54
    • 92

    Sunny

    • 53
    • 87

    Sunny

    • 56
    • 92

    Sunny

    • 60
    • 99

    Hot

    • 61
    • 99

    Hot

Today 18 Aug John Day Basin

Partly cloudy in the Morning, becoming sunny. Highs in the 80s. Light Wind, becoming northwest 5 to 10 Mph in the afternoon.

Tonight 18 Aug John Day Basin

Mostly clear. Lows in the lower to mid 50s. Northwest wind 5 to 10 Mph.

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Clyde Holliday State Park Temperature Statistics

August Temperature

Grant County Regional Airport (6.2 miles)

  • Lowest 8 August, 2025

    43.9 °F

  • Average August

    70.2 °F

  • Highest 12 August, 2025

    98.6 °F

Climate (2020–Present)

Grant County Regional Airport (6.2 miles)

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  • Average Low 2020–2025

    39.1 °F

  • Average 2020–2025

    50.4 °F

  • Average High 2020–2025

    62.3 °F
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