Merrill Lake Weather Forecast

    • 38
    • 47

    Rain

    • 36
    • 43

    Rain

    • 34
    • 44

    Rain Showers

    • 37
    • 53

    Mostly Sunny

    • 43
    • 62

    Partly Sunny

    • 46
    • 65

    Mostly Cloudy

Today 31 Mar South Washington Cascades

Mostly cloudy with a chance of snow and rain. Snow level 4000 feet this afternoon. No snow accumulation. Southeast wind 5 to 10 Mph, becoming south this afternoon. Chance of precipitation 50 percent. Rainfall Amounts less than a tenth of an inch.

Tonight 31 Mar South Washington Cascades

A chance of rain and snow in the Evening, then rain and snow after midnight. Snow level 4000 Feet, decreasing to 3000 feet after midnight. Snow accumulation up to 2 Inches. South wind 5 to 10 Mph. Chance of precipitation near 100 percent. Rainfall Amounts a tenth to a half of an inch.

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Merrill Lake Temperature Statistics

March Temperature

Southwest Washington Regional Airport (26.7 miles)

  • Lowest 22 March, 2026

    28.9 °F

  • Average March

    47.4 °F

  • Highest 16 March, 2026

    66 °F

Climate (2021–Present)

Southwest Washington Regional Airport (26.7 miles)

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  • Average Low 2021–2026

    45.1 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    62.5 °F
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