Merrill Lake Weather Forecast

    • 28
    • 39

    Mostly Sunny

    • 25
    • 39

    Becoming Sunny

    • 26
    • 38

    Mostly Sunny

    • 28
    • 39

    Partly Sunny

    • 30
    • 41

    Mostly Cloudy

    • 32
    • 42

    Partly Sunny

    • 32
    • 43

    Chance Rain

Today 17 Jan South Washington Cascades

Sunny. Free air freezing level at the surface. Winds light.

Tonight 17 Jan South Washington Cascades

Mostly clear. Free air freezing level at the surface. East wind 5 to 10 Mph.

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  • Temperature Real-Time

Merrill Lake Temperature Statistics

January Temperature

Southwest Washington Regional Airport (26.7 miles)

  • Lowest 13 January, 2025

    28.9 °F

  • Average January

    42.6 °F

  • Highest 8 January, 2025

    54 °F

Climate (2020–Present)

Southwest Washington Regional Airport (26.7 miles)

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  • Average Low 2020–2025

    45 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    62.1 °F
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