Dayville Weather Forecast

    • 38
    • 81

    Increasing Clouds

    • 35
    • 73

    Partly Sunny

    • 34
    • 72

    Mostly Sunny

    • 34
    • 68

    Mostly Cloudy

    • 32
    • 61

    Partly Sunny

    • 34
    • 62

    Slight Chance Rain Showers

Today 16 Oct John Day Basin

Sunny. Highs in the mid 70s to lower 80s. Southeast wind 5 to 10 Mph with Gusts to around 20 Mph.

Tonight 16 Oct John Day Basin

Partly cloudy. Lows in the lower to mid 40s. Southeast wind 5 to 15 Mph. Gusts up to 25 Mph overnight.

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Dayville Temperature Statistics

October Temperature

Grant County Regional Airport (28 miles)

  • Lowest 13 October, 2026

    25.2 °F

  • Average October

    56.9 °F

  • Highest 4 October, 2026

    88.2 °F

Climate (2021–2026)

Grant County Regional Airport (28 miles)

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  • Average Low 2021–2026

    39.1 °F

  • Average 2021–2026

    50.3 °F

  • Average High 2021–2026

    62.1 °F
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