Cougar Mountain Weather Forecast

    • 55
    • 66

    Chance Rain

    • 55
    • 71

    Mostly Cloudy

    • 55
    • 76

    Sunny

    • 56
    • 82

    Mostly Sunny

    • 53
    • 74

    Slight Chance Rain Showers

    • 51
    • 67

    Partly Sunny

Today 25 Sep East Puget Sound Lowlands

Cloudy with a chance of rain. Highs in the 60s. Light wind becoming southwest around 10 Mph in the afternoon.

Tonight 25 Sep East Puget Sound Lowlands

Mostly cloudy. A chance of rain in the evening. Lows in the lower to mid 50s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cougar Mountain Temperature Statistics

September Temperature

Renton, Renton Municipal Airport (5.6 miles)

  • Lowest 15 September, 2017

    46.9 °F
  • Average September

    64.6 °F
  • Highest 2 September, 2017

    89.1 °F

Climate (2010–Present)

Renton, Renton Municipal Airport (5.6 miles)

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  • Average Low 2010–Present

    47.6 °F
  • Average 2010–Present

    54.8 °F
  • Average High 2010–Present

    62.9 °F
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