Mercer Ranch Airport Weather Forecast

    • 59
    • 90

    Becoming Sunny

    • 60
    • 92

    Increasing Clouds

    • 55
    • 84

    Chance Rain Showers

    • 49
    • 74

    Chance Rain Showers

    • 49
    • 69

    Mostly Cloudy

    • 50
    • 71

    Partly Sunny

    • 50
    • 74

    Partly Sunny

Today 23 Jun Lower Columbia Basin of Washington

Mostly cloudy. Highs in the lower to mid 90s. Northeast wind 5 to 10 Mph.

Tonight 23 Jun Lower Columbia Basin of Washington

Mostly cloudy in the evening then clearing. Lows in the mid 50s to lower 60s. Northeast wind 5 to 10 Mph in the Evening, becoming light.

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Mercer Ranch Airport Temperature Statistics

June Temperature

Sunnyside Municipal Airport (29.2 miles)

  • Lowest 21 June, 2026

    54 °F

  • Average June

    76.4 °F

  • Highest 19 June, 2026

    91.2 °F

Climate (2021–2026)

Sunnyside Municipal Airport (29.2 miles)

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  • Average Low 2021–2026

    38.9 °F

  • Average 2021–2026

    51.1 °F

  • Average High 2021–2026

    63.1 °F
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