Sammamish Weather Forecast

    • 51
    • 74

    Increasing Clouds

    • 50
    • 71

    Mostly Cloudy

    • 48
    • 67

    Partly Sunny

    • 48
    • 69

    Mostly Sunny

    • 50
    • 70

    Partly Sunny

    • 47
    • 64

    Rain Likely

Today 4 Oct Eastside

Mostly sunny. Patchy dense fog in the morning. Highs in the lower to mid 70s. Light wind.

Tonight 4 Oct Eastside

Mostly clear. Lows in the lower to mid 50s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sammamish Temperature Statistics

October Temperature

Renton Municipal Airport (11.8 miles)

  • Lowest 1 October, 2026

    51.1 °F

  • Average October

    60.7 °F

  • Highest 2 October, 2026

    73 °F

Climate (2021–2026)

Renton Municipal Airport (11.8 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    54.7 °F

  • Average High 2021–2026

    62.2 °F
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