Umatilla National Forest Weather Forecast

    • 32
    • 45

    Mostly Cloudy

    • 26
    • 35

    Slight Chance Rain/Snow

    • 36
    • 44

    Mostly Cloudy

    • 33
    • 44

    Mostly Cloudy

    • 35
    • 43

    Mostly Cloudy

    • 33
    • 42

    Chance Rain/Snow

Today 31 Oct Southern Blue Mountains of Oregon

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

Tonight 31 Oct Southern Blue Mountains of Oregon

Mostly cloudy. A chance of rain Showers in the Evening, then a chance of rain and high mountain snow Showers overnight. Patchy fog overnight. Lows in the lower to mid 30s. Chance of precipitation 50 percent.

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  • Temperature Real-Time

Umatilla National Forest Temperature Statistics

October Temperature

Grant County Regional Airport (35.4 miles)

  • Lowest 13 October, 2026

    25.2 °F

  • Average October

    52.5 °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

    50.3 °F

  • Average High 2021–2026

    62.1 °F
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