Umatilla National Wildlife Refuge Weather Forecast

    • 52
    • 77

    Partly Sunny

    • 50
    • 71

    Rain Likely

    • 45
    • 56

    Rain Likely

    • 43
    • 62

    Mostly Sunny

    • 46
    • 65

    Partly Sunny

    • 45
    • 64

    Partly Sunny

Today 20 Apr Lower Columbia Basin of Oregon

Mostly cloudy. Highs in the upper 70s. Light Wind, becoming north 5 to 10 Mph in the afternoon.

Tonight 20 Apr Lower Columbia Basin of Oregon

Partly cloudy. Lows in the upper 40s to lower 50s. West wind 5 to 15 Mph.

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Umatilla National Wildlife Refuge Temperature Statistics

April Temperature

Hermiston, Hermiston Municipal Airport (16.2 miles)

  • Lowest 18 April, 2026

    30 °F

  • Average April

    52 °F

  • Highest 6 April, 2026

    78.7 °F

Climate (2021–Present)

Hermiston, Hermiston Municipal Airport (16.2 miles)

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  • Average Low 2021–2026

    43.1 °F

  • Average 2021–2026

    55.4 °F

  • Average High 2021–2026

    67.7 °F
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