Grotto Weather Forecast

    • 45
    • 61

    Rain Likely

    • 44
    • 56

    Rain

    • 43
    • 61

    Partly Sunny

    • 46
    • 66

    Partly Sunny

    • 45
    • 63

    Partly Sunny

    • 46
    • 66

    Mostly Sunny

Today 28 Sep Foothills and Valleys of Snohomish and Northern King Counties

Mostly sunny. Highs in the 60s. Light wind.

Tonight 28 Sep Foothills and Valleys of Snohomish and Northern King Counties

Partly cloudy in the Evening, then mostly cloudy with a slight chance of rain in the late evening and early morning. Cloudy with a chance of rain in the morning. Lows in the lower 50s. South wind to 10 Mph increasing to 10 to 15 Mph after midnight. Gusts to 25 Mph.

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Grotto Temperature Statistics

September Temperature

Everett Snohomish County (41.6 miles)

  • Lowest 26 September, 2026

    46 °F

  • Average September

    58.4 °F

  • Highest 9 September, 2026

    73.9 °F

Climate (2021–2026)

Everett Snohomish County (41.6 miles)

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  • Average Low 2021–2026

    46.5 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    59.2 °F
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