Cougar Mountain Weather Forecast

    • 35
    • 44

    Rain

    • 34
    • 45

    Rain/Snow

    • 38
    • 51

    Partly Sunny

    • 39
    • 52

    Mostly Cloudy

    • 44
    • 58

    Chance Rain

    • 42
    • 53

    Chance Rain

Today 14 Apr Foothills and Valleys of Central King County

Cloudy with a chance of rain in the Morning, then rain in the afternoon. Rainfall Amounts a quarter to a half inch possible. Highs near 50. South wind 10 to 15 Mph.

Tonight 14 Apr Foothills and Valleys of Central King County

Rain in the Evening, then rain likely after midnight. A slight chance of snow in the morning. No snow accumulation. Lows in the mid to upper 30s. South wind 10 to 15 Mph becoming southwest after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cougar Mountain Temperature Statistics

April Temperature

Renton Municipal Airport (5.6 miles)

  • Lowest 8 April, 2026

    36 °F

  • Average April

    51.7 °F

  • Highest 6 April, 2026

    73.9 °F

Climate (2021–Present)

Renton Municipal Airport (5.6 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    54.7 °F

  • Average High 2021–2026

    62.4 °F
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