Hermiston Municipal Airport Weather Forecast

    • 49
    • 79

    Increasing Clouds

    • 52
    • 83

    Mostly Sunny

    • 55
    • 86

    Partly Sunny

    • 52
    • 82

    Partly Sunny

    • 44
    • 72

    Partly Sunny

    • 46
    • 67

    Slight Chance Rain Showers

Today 21 May Lower Columbia Basin of Oregon

Sunny. Highs in the mid to upper 70s. North wind 5 to 10 Mph.

Tonight 21 May Lower Columbia Basin of Oregon

Mostly clear. Lows in the upper 40s to lower 50s. Southwest wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hermiston Municipal Airport Temperature Statistics

May Temperature

Hermiston, Hermiston Municipal Airport (0 miles)

  • Lowest 1 May, 2026

    37.7 °F

  • Average May

    62.5 °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

    55.3 °F

  • Average High 2021–2026

    67.7 °F
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