Umatilla National Forest Weather Forecast

    • 34
    • 42

    Rain/Snow

    • 26
    • 40

    Rain/Snow

    • 25
    • 32

    Snow

    • 30
    • 44

    Mostly Sunny

    • 35
    • 53

    Mostly Sunny

    • 39
    • 58

    Partly Sunny

Today 31 Mar Southern Blue Mountains of Oregon

Rain and high mountain snow in the Morning, then rain Showers, high mountain snow and a chance of Thunderstorms in the afternoon. Little or no high mountain snow accumulation. Snow level 5000 feet in the morning. Highs in the mid 40s to lower 50s. Chance of precipitation 90 percent.

Tonight 31 Mar Southern Blue Mountains of Oregon

Mostly cloudy. Rain Showers likely and a chance of Thunderstorms in the Evening, then a chance of rain and high mountain snow overnight. No high mountain snow accumulation. Lows in the 30s. Chance of precipitation 70 percent.

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Umatilla National Forest Temperature Statistics

March Temperature

Grant County Regional Airport (35.4 miles)

  • Lowest 15 March, 2026

    25.7 °F

  • Average March

    46.5 °F

  • Highest 19 March, 2026

    78.8 °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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