Dayville Weather Forecast

    • 47
    • 78

    Sunny

    • 49
    • 87

    Rain Showers

    • 36
    • 60

    Rain Showers

    • 37
    • 64

    Mostly Sunny

    • 41
    • 74

    Mostly Sunny

    • 48
    • 82

    Mostly Sunny

    • 50
    • 87

    Mostly Sunny

Today 1 May John Day Basin

Sunny. Highs in the mid 70s to lower 80s. Light wind.

Tonight 1 May John Day Basin

Clear. Lows in the 40s. East wind 5 to 10 Mph.

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Dayville Temperature Statistics

May Temperature

Grant County Regional Airport (28 miles)

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  • Average May

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Climate (2020–Present)

Grant County Regional Airport (28 miles)

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  • Average Low 2020–2025

    39.1 °F

  • Average 2020–2025

    50.4 °F

  • Average High 2020–2025

    62.2 °F
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