Umatilla National Forest Weather Forecast

    • 55
    • 76

    Increasing Clouds

    • 50
    • 71

    Mostly Sunny

    • 51
    • 72

    Sunny

    • 49
    • 71

    Sunny

    • 51
    • 70

    Mostly Sunny

    • 40
    • 66

    Slight Chance Rain Showers

Today 4 Oct Southern Blue Mountains of Oregon

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

Tonight 4 Oct Southern Blue Mountains of Oregon

Mostly cloudy. Lows in the lower to mid 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

    61.2 °F

  • Highest 1 October, 2026

    77.9 °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 °F
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