Umatilla National Forest Weather Forecast

    • 51
    • 74

    Sunny

    • 51
    • 73

    Mostly Sunny

    • 36
    • 64

    Partly Sunny

    • 32
    • 43

    Partly Sunny

    • 30
    • 40

    Slight Chance Snow Showers

    • 33
    • 44

    Mostly Sunny

Today 7 Oct Southern Blue Mountains of Oregon

Sunny. Highs in the mid 70s to lower 80s.

Tonight 7 Oct Southern Blue Mountains of Oregon

Clear. Lows in the mid 40s to lower 50s.

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Umatilla National Forest Temperature Statistics

October Temperature

Grant County Regional Airport (35.4 miles)

  • Lowest 1 October, 2026

    45.3 °F

  • Average October

    64.5 °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

    50.2 °F

  • Average High 2021–2026

    62.1 °F
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