Sammamish Valley Weather Forecast

    • 54
    • 74

    Rain

    • 53
    • 70

    Rain Likely

    • 53
    • 72

    Mostly Cloudy

    • 54
    • 75

    Mostly Cloudy

    • 56
    • 76

    Chance Rain

    • 53
    • 68

    Rain Likely

    • 52
    • 70

    Chance Rain

Today 28 Aug Eastside

Cloudy in the morning then becoming mostly sunny. Highs in the lower 70s. Light wind.

Tonight 28 Aug Eastside

Cloudy in the Evening, then a chance of rain after midnight. Lows in the 50s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sammamish Valley Temperature Statistics

August Temperature

Boeing Field - King County International Airport (13 miles)

  • Lowest 3 August, 2026

    55 °F

  • Average August

    68.3 °F

  • Highest 6 August, 2026

    86 °F

Climate (2021–2026)

Boeing Field - King County International Airport (13 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    54.2 °F

  • Average High 2021–2026

    61.6 °F
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