Dayville Weather Forecast

    • 57
    • 98

    Hot

    • 57
    • 97

    Hot

    • 55
    • 91

    Partly Sunny

    • 55
    • 89

    Partly Sunny

    • 54
    • 88

    Partly Sunny

    • 56
    • 90

    Mostly Sunny

Today 17 Jul John Day Basin

Sunny, haze. Highs in the lower to mid 90s. Light Wind, becoming northwest 5 to 10 Mph with Gusts to around 20 Mph in the afternoon.

Tonight 17 Jul John Day Basin

Mostly clear. Haze. Lows in the mid to upper 50s. Northwest wind 5 to 15 Mph.

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Dayville Temperature Statistics

July Temperature

Grant County Regional Airport (28 miles)

  • Lowest 5 July, 2025

    45.7 °F

  • Average July

    73.1 °F

  • Highest 8 July, 2025

    97.9 °F

Climate (2020–Present)

Grant County Regional Airport (28 miles)

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  • Average Low 2020–2025

    39.1 °F

  • Average 2020–2025

    50.5 °F

  • Average High 2020–2025

    62.3 °F
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