Heart Lake Weather Forecast

    • 56
    • 78

    Becoming Sunny

    • 54
    • 72

    Mostly Sunny

    • 53
    • 69

    Partly Sunny

    • 53
    • 70

    Partly Sunny

    • 55
    • 68

    Rain Likely

    • 53
    • 68

    Rain Likely

Today 16 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Sunny. Areas of smoke in the morning. Areas of smoke late in the afternoon. Highs in the mid 70s to lower 80s. Light wind becoming southeast to 10 Mph in the afternoon.

Tonight 16 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties

Clear. Areas of smoke. Lows in the 50s. East wind 10 to 15 Mph becoming southeast after midnight. Gusts to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Heart Lake Temperature Statistics

September Temperature

Whidbey Island Naval Air Station - Ault Field (8.1 miles)

  • Lowest 10 September, 2025

    50 °F

  • Average September

    57 °F

  • Highest 13 September, 2025

    66.9 °F

Climate (2020–Present)

Whidbey Island Naval Air Station - Ault Field (8.1 miles)

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  • Average Low 2020–2025

    44.6 °F

  • Average 2020–2025

    50.1 °F

  • Average High 2020–2025

    56.1 °F
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