Round Lake Weather Forecast

    • 43
    • 54

    Partly Sunny

    • 41
    • 60

    Mostly Cloudy

    • 37
    • 50

    Rain/Snow Likely

    • 33
    • 39

    Rain/Snow Likely

    • 32
    • 44

    Slight Chance Snow

    • 33
    • 48

    Partly Sunny

Today 19 Apr Cascades of Snohomish and Northern King Counties

Mostly sunny. Freezing level near 10000 feet. Afternoon pass Temperatures in the upper 50s. Light wind.

Tonight 19 Apr Cascades of Snohomish and Northern King Counties

Partly cloudy. Freezing level near 10000 feet. Lows in the lower 40s. Light wind.

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Round Lake Temperature Statistics

April Temperature

Arlington Municipal Airport (39.1 miles)

  • Lowest 8 April, 2026

    30 °F

  • Average April

    48.2 °F

  • Highest 6 April, 2026

    69.1 °F

Climate (2021–Present)

Arlington Municipal Airport (39.1 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    59.9 °F
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