Sammamish Weather Forecast

    • 45
    • 67

    Becoming Sunny

    • 52
    • 74

    Partly Sunny

    • 56
    • 85

    Mostly Sunny

    • 52
    • 74

    Mostly Cloudy

    • 49
    • 70

    Mostly Cloudy

    • 49
    • 68

    Mostly Cloudy

Today 31 May Eastside

Sunny. Highs in the mid to upper 60s. Light wind becoming north around 10 Mph in the afternoon.

Tonight 31 May Eastside

Mostly clear. Lows in the mid to upper 40s. North wind around 10 Mph in the evening becoming light.

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Sammamish Temperature Statistics

May Temperature

Renton Municipal Airport (11.8 miles)

  • Lowest 17 May, 2026

    43 °F

  • Average May

    59.8 °F

  • Highest 12 May, 2026

    82 °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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