John Day Weather Forecast

    • 54
    • 96

    Mostly Sunny

    • 55
    • 95

    Sunny

    • 59
    • 96

    Partly Sunny

    • 60
    • 94

    Mostly Cloudy

    • 60
    • 95

    Partly Sunny

    • 59
    • 94

    Chance Rain Showers

Today 17 Jul John Day Basin

Sunny. Highs in the upper 80s to mid 90s. Light Wind, becoming northwest 5 to 10 Mph in the afternoon.

Tonight 17 Jul John Day Basin

Clear. Lows in the mid to upper 50s. Northwest wind 5 to 15 Mph in the Evening, becoming light.

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John Day Temperature Statistics

July Temperature

Grant County Regional Airport (0.6 miles)

  • Lowest 1 July, 2026

    43 °F

  • Average July

    71.5 °F

  • Highest 7 July, 2026

    95.5 °F

Climate (2021–2026)

Grant County Regional Airport (0.6 miles)

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  • Average Low 2021–2026

    39.1 °F

  • Average 2021–2026

    50.3 °F

  • Average High 2021–2026

    62 °F
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