Mercer Ranch Airport Weather Forecast

    • 26
    • 42

    Mostly Sunny

    • 24
    • 36

    Decreasing Clouds

    • 21
    • 34

    Mostly Sunny

    • 23
    • 31

    Partly Sunny

    • 24
    • 33

    Partly Sunny

    • 25
    • 36

    Partly Sunny

    • 27
    • 37

    Mostly Cloudy

Today 17 Jan Lower Columbia Basin of Washington

Sunny. Highs in the upper 30s to lower 40s. Northwest wind 5 to 10 Mph.

Tonight 17 Jan Lower Columbia Basin of Washington

Clear. Patchy freezing fog overnight. Lows in the lower to mid 20s. Light wind.

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Mercer Ranch Airport Temperature Statistics

January Temperature

Sunnyside Municipal Airport (29.2 miles)

  • Lowest 13 January, 2025

    26.2 °F

  • Average January

    34.3 °F

  • Highest 11 January, 2025

    51.4 °F

Climate (2020–Present)

Sunnyside Municipal Airport (29.2 miles)

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  • Average Low 2020–2025

    39.6 °F

  • Average 2020–2025

    52.4 °F

  • Average High 2020–2025

    64.7 °F
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