Hermiston Municipal Airport Weather Forecast

    • 45
    • 70

    Becoming Sunny

    • 43
    • 68

    Partly Sunny

    • 37
    • 63

    Partly Sunny

    • 40
    • 66

    Mostly Sunny

    • 43
    • 72

    Mostly Sunny

    • 45
    • 74

    Mostly Sunny

Today 14 May Lower Columbia Basin of Oregon

Partly cloudy. Highs in the upper 60s to lower 70s. Windy. Southwest wind 15 to 25 Mph.

Tonight 14 May Lower Columbia Basin of Oregon

Mostly cloudy in the evening then clearing. Lows in the mid to upper 40s. Windy. West wind 20 to 30 Mph.

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Hermiston Municipal Airport Temperature Statistics

May Temperature

Hermiston, Hermiston Municipal Airport (0 miles)

  • Lowest 1 May, 2026

    37.7 °F

  • Average May

    65.6 °F

  • Highest 4 May, 2026

    88.6 °F

Climate (2021–Present)

Hermiston, Hermiston Municipal Airport (0 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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