Umatilla National Forest Weather Forecast

    • 32
    • 53

    Rain Showers

    • 26
    • 40

    Partly Sunny

    • 33
    • 49

    Partly Sunny

    • 35
    • 52

    Partly Sunny

    • 33
    • 48

    Chance Rain/Snow

    • 32
    • 46

    Chance Rain/Snow

Today 22 Oct Southern Blue Mountains of Oregon

Mostly cloudy. A chance of rain Showers in the Morning, then rain Showers and a chance of Thunderstorms in the afternoon. Highs in the mid 50s to lower 60s. Chance of precipitation 90 percent. Rainfall Amounts around a tenth of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 22 Oct Southern Blue Mountains of Oregon

Rain Showers and a chance of Thunderstorms in the Evening, then a chance of rain and high mountain snow Showers overnight. No high mountain snow accumulation. Lows in the lower to mid 30s. West wind 5 to 15 Mph overnight. Gusts up to 30 Mph. Chance of precipitation near 100 percent.

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Umatilla National Forest Temperature Statistics

October Temperature

Grant County Regional Airport (35.4 miles)

  • Lowest 13 October, 2026

    25.2 °F

  • Average October

    56.1 °F

  • Highest 4 October, 2026

    88.2 °F

Climate (2021–2026)

Grant County Regional Airport (35.4 miles)

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  • Average Low 2021–2026

    39 °F

  • Average 2021–2026

    50.3 °F

  • Average High 2021–2026

    62.1 °F
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