Umatilla National Forest Weather Forecast

    • 29
    • 39

    Decreasing Clouds

    • 30
    • 35

    Mostly Cloudy

    • 31
    • 42

    Partly Sunny

    • 35
    • 49

    Mostly Sunny

    • 37
    • 51

    Mostly Sunny

    • 41
    • 58

    Mostly Sunny

Today 10 Oct Southern Blue Mountains of Oregon

Mostly sunny. Highs in the mid 40s to lower 50s.

Tonight 10 Oct Southern Blue Mountains of Oregon

Mostly clear. Lows in the mid 20s to lower 30s. Gusts up to 20 Mph overnight.

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Umatilla National Forest Temperature Statistics

October Temperature

Grant County Regional Airport (35.4 miles)

  • Lowest 6 October, 2026

    45.1 °F

  • Average October

    64.7 °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

    39.1 °F

  • Average 2021–2026

    50.3 °F

  • Average High 2021–2026

    62.1 °F
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