Square Lake Weather Forecast

    • 52
    • 69

    Slight Chance Rain

    • 53
    • 72

    Partly Sunny

    • 54
    • 77

    Mostly Sunny

    • 51
    • 72

    Partly Sunny

    • 50
    • 68

    Chance Rain

    • 50
    • 69

    Partly Sunny

Today 7 Sep Eastern Kitsap County

Mostly cloudy. A slight chance of rain in the afternoon. Highs in the mid 60s to lower 70s. Light wind.

Tonight 7 Sep Eastern Kitsap County

Partly cloudy. Lows in the upper 40s to mid 50s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Square Lake Temperature Statistics

September Temperature

Bremerton, Bremerton National Airport (3.1 miles)

  • Lowest 4 September, 2026

    48.9 °F

  • Average September

    58.4 °F

  • Highest 1 September, 2026

    69.1 °F

Climate (2021–2026)

Bremerton, Bremerton National Airport (3.1 miles)

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  • Average Low 2021–2026

    42.4 °F

  • Average 2021–2026

    51.1 °F

  • Average High 2021–2026

    60 °F
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