Umatilla National Forest Weather Forecast

    • 38
    • 56

    Mostly Cloudy

    • 41
    • 58

    Mostly Cloudy

    • 44
    • 60

    Rain Showers Likely

    • 28
    • 47

    Rain Showers

    • 26
    • 36

    Partly Sunny

    • 33
    • 41

    Chance Rain/Snow

Today 19 Oct Southern Blue Mountains of Oregon

Mostly cloudy. Highs in the mid 50s to mid 60s.

Tonight 19 Oct Southern Blue Mountains of Oregon

Mostly cloudy. Lows in the mid 30s to lower 40s.

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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

    57 °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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