Umatilla National Forest Weather Forecast

    • 35
    • 49

    Mostly Cloudy

    • 37
    • 52

    Partly Sunny

    • 42
    • 58

    Mostly Sunny

    • 46
    • 63

    Mostly Cloudy

    • 45
    • 62

    Chance Rain

    • 46
    • 66

    Partly Sunny

    • 46
    • 67

    Partly Sunny

Today 28 Apr Southern Blue Mountains of Oregon

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

Tonight 28 Apr Southern Blue Mountains of Oregon

Mostly cloudy. Lows in the mid to upper 30s. Gusts up to 20 Mph in the evening.

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Umatilla National Forest Temperature Statistics

April Temperature

Grant County Regional Airport (35.4 miles)

  • Lowest 17 April, 2026

    25.2 °F

  • Average April

    46.9 °F

  • Highest 6 April, 2026

    73.6 °F

Climate (2021–Present)

Grant County Regional Airport (35.4 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    50.6 °F

  • Average High 2021–2026

    62.4 °F
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