Sammamish Weather Forecast

    • 43
    • 59

    Increasing Clouds

    • 41
    • 60

    Mostly Cloudy

    • 41
    • 60

    Mostly Sunny

    • 43
    • 64

    Partly Sunny

    • 43
    • 59

    Chance Rain

    • 41
    • 57

    Slight Chance Rain

Today 18 Oct Eastside

Mostly sunny. Patchy fog in the morning. Highs near 60. Light wind.

Tonight 18 Oct Eastside

Mostly cloudy. Areas of fog in the morning. Lows in the 40s. Light wind.

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  • Temperature Real-Time

Sammamish Temperature Statistics

October Temperature

Renton Municipal Airport (11.8 miles)

  • Lowest 12 October, 2026

    39.9 °F

  • Average October

    56.8 °F

  • Highest 16 October, 2026

    75.9 °F

Climate (2021–2026)

Renton Municipal Airport (11.8 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    54.7 °F

  • Average High 2021–2026

    62.3 °F
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