Lake Chaplain Weather Forecast

    • 45
    • 63

    Chance Rain Showers

    • 46
    • 60

    Rain Showers Likely

    • 48
    • 62

    Chance Rain Showers

    • 44
    • 58

    Slight Chance Rain Showers

    • 46
    • 60

    Chance Rain Showers

    • 48
    • 61

    Rain Showers Likely

Today 11 May Foothills and Valleys of Snohomish and Northern King Counties

Mostly cloudy. A slight chance of Showers in the Morning, then a chance of Showers in the afternoon. Highs in the lower to mid 60s. Light wind.

Tonight 11 May Foothills and Valleys of Snohomish and Northern King Counties

Mostly cloudy with rain Showers likely in the Evening, then mostly cloudy with a chance of rain Showers after midnight. Rainfall Amounts a tenth to a quarter of an inch possible. Lows in the lower to mid 40s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Chaplain Temperature Statistics

May Temperature

Arlington Municipal Airport (19.9 miles)

  • Lowest 5 May, 2025

    36 °F

  • Average May

    54.6 °F

  • Highest 6 May, 2025

    77 °F

Climate (2020–Present)

Arlington Municipal Airport (19.9 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    50.5 °F

  • Average High 2020–2025

    59.5 °F
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