Sammamish Weather Forecast

    • 46
    • 69

    Partly Sunny

    • 49
    • 74

    Partly Sunny

    • 50
    • 72

    Mostly Cloudy

    • 49
    • 64

    Rain Likely

    • 46
    • 56

    Chance Rain

    • 44
    • 63

    Partly Sunny

    • 45
    • 67

    Mostly Sunny

Today 18 Apr Eastside

Mostly sunny. Highs near 70. Light wind.

Tonight 18 Apr Eastside

Partly cloudy then becoming mostly cloudy late in the evening then becoming partly cloudy. Lows in the mid to upper 40s. Light wind.

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  • Temperature Real-Time

Sammamish Temperature Statistics

April Temperature

Renton Municipal Airport (11.8 miles)

  • Lowest 8 April, 2026

    36 °F

  • Average April

    50.8 °F

  • Highest 6 April, 2026

    73.9 °F

Climate (2021–Present)

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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