Umatilla National Forest Weather Forecast

    • 41
    • 78

    Mostly Cloudy

    • 36
    • 52

    Rain Showers

    • 36
    • 54

    Mostly Sunny

    • 34
    • 52

    Partly Sunny

    • 30
    • 41

    Slight Chance Snow Showers

    • 33
    • 46

    Partly Sunny

    • 37
    • 53

    Mostly Sunny

Today 12 May Southern Blue Mountains of Oregon

Partly cloudy. Highs in the 80s.

Tonight 12 May Southern Blue Mountains of Oregon

Partly cloudy. A 20 percent chance of Showers and Thunderstorms in the evening. Lows in the 40s.

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Umatilla National Forest Temperature Statistics

May Temperature

Grant County Regional Airport (35.4 miles)

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Climate (2021–Present)

Grant County Regional Airport (35.4 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    50.5 °F

  • Average High 2021–2026

    62.3 °F
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