Lake Wallula Weather Forecast

    • 47
    • 67

    Slight Chance Rain Showers

    • 54
    • 84

    Increasing Clouds

    • 54
    • 91

    Chance Thunderstorms

    • 47
    • 76

    Slight Chance Rain Showers

    • 45
    • 72

    Partly Sunny

    • 46
    • 74

    Mostly Sunny

    • 51
    • 82

    Mostly Sunny

Today 26 May Lower Columbia Basin of Oregon

Mostly cloudy. Highs in the mid 60s. West wind 5 to 10 Mph.

Tonight 26 May Lower Columbia Basin of Oregon

Mostly cloudy with a 20 percent chance of rain Showers. Lows in the upper 40s. Southwest wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Wallula Temperature Statistics

May Temperature

Hermiston, Hermiston Municipal Airport (7.5 miles)

  • Lowest 1 May, 2026

    37.7 °F

  • Average May

    62.7 °F

  • Highest 4 May, 2026

    88.6 °F

Climate (2021–Present)

Hermiston, Hermiston Municipal Airport (7.5 miles)

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  • Average Low 2021–2026

    43 °F

  • Average 2021–2026

    55.3 °F

  • Average High 2021–2026

    67.7 °F
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