Dayville Weather Forecast

    • 56
    • 97

    Patchy Smoke

    • 56
    • 98

    Patchy Smoke

    • 54
    • 97

    Hot

    • 49
    • 91

    Mostly Sunny

    • 50
    • 89

    Mostly Sunny

    • 45
    • 84

    Mostly Sunny

Today 24 Aug John Day Basin

Sunny. Patchy smoke. Highs in the upper 80s to mid 90s. Light wind.

Tonight 24 Aug John Day Basin

Mostly clear. Patchy smoke. Lows in the mid to upper 50s. North wind 5 to 10 Mph with Gusts to around 20 Mph in the Evening, becoming light.

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Dayville Temperature Statistics

August Temperature

Grant County Regional Airport (28 miles)

  • Lowest 3 August, 2026

    44.2 °F

  • Average August

    73.3 °F

  • Highest 7 August, 2026

    99.5 °F

Climate (2021–2026)

Grant County Regional Airport (28 miles)

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  • Average Low 2021–2026

    39 °F

  • Average 2021–2026

    50.3 °F

  • Average High 2021–2026

    62.1 °F
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