Sammamish Weather Forecast

    • 47
    • 51

    Rain

    • 48
    • 57

    Rain

    • 47
    • 53

    Rain

    • 47
    • 54

    Chance Rain

    • 46
    • 55

    Rain Likely

    • 46
    • 53

    Rain

    • 46
    • 55

    Rain

Today 9 Dec Eastside

Cloudy. A chance of rain in the Morning, then rain likely in the afternoon. Rainfall Amounts less than a tenth of an inch likely. Highs in the lower 50s. Light wind.

Tonight 9 Dec Eastside

Rain likely in the Evening, then rain at Times after midnight. Rainfall Amounts a tenth to a quarter of an inch possible. Lows in the mid to upper 40s. Southeast wind 10 to 15 Mph with Gusts to 25 Mph becoming south 10 to 20 Mph with Gusts to 40 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sammamish Temperature Statistics

December Temperature

Renton Municipal Airport (11.8 miles)

  • Lowest 1 December, 2025

    33.1 °F

  • Average December

    47 °F

  • Highest 5 December, 2025

    57 °F

Climate (2020–Present)

Renton Municipal Airport (11.8 miles)

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  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    62.2 °F
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