John Day Weather Forecast

    • 49
    • 55

    Rain Showers Likely

    • 38
    • 55

    Rain Showers Likely

    • 37
    • 57

    Chance Rain Showers

    • 38
    • 58

    Slight Chance Rain Showers

    • 41
    • 64

    Partly Sunny

    • 42
    • 68

    Mostly Sunny

    • 46
    • 70

    Mostly Sunny

Today 19 Sep John Day Basin

Numerous Showers and isolated Thunderstorms early in the Evening, then numerous Showers in the late evening and overnight. Lows 38 to 45. West wind 10 to 15 Mph and gusty shifting to the south 5 to 10 Mph overnight. Chance of precipitation 70 percent.

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John Day Temperature Statistics

September Temperature

Grant County Regional Airport (0.6 miles)

  • Lowest 16 September, 2017

    37.4 °F
  • Average September

    71 °F
  • Highest 3 September, 2017

    104 °F

Climate (2010–Present)

Grant County Regional Airport (0.6 miles)

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  • Average Low 2010–Present

    40.7 °F
  • Average 2010–Present

    52.6 °F
  • Average High 2010–Present

    64 °F
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