Umatilla National Forest Weather Forecast

    • 51
    • 75

    Areas Smoke

    • 59
    • 83

    Areas Smoke

    • 61
    • 87

    Sunny

    • 59
    • 84

    Mostly Sunny

    • 55
    • 80

    Mostly Sunny

    • 52
    • 75

    Mostly Sunny

Today 4 Aug Southern Blue Mountains of Oregon

Sunny. Areas of smoke. Highs in the upper 70s to mid 80s. Gusts up to 20 Mph in the afternoon.

Tonight 4 Aug Southern Blue Mountains of Oregon

Mostly clear. Areas of smoke in the Evening, then patchy smoke overnight. Lows in the upper 40s to mid 50s. Gusts up to 20 Mph in the evening.

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  • Temperature Real-Time

Umatilla National Forest Temperature Statistics

August Temperature

Grant County Regional Airport (35.4 miles)

  • Lowest 1 August, 2026

    58.5 °F

  • Average August

    73.2 °F

  • Highest 1 August, 2026

    90.3 °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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