Lake Morton Weather Forecast

    • 51
    • 66

    Increasing Clouds

    • 48
    • 61

    Rain

    • 46
    • 65

    Partly Sunny

    • 49
    • 68

    Mostly Cloudy

    • 47
    • 66

    Partly Sunny

    • 48
    • 67

    Partly Sunny

Today 28 Sep Foothills and Valleys of Pierce and Southern King Counties

Mostly sunny. Highs in the mid to upper 60s. Light wind.

Tonight 28 Sep Foothills and Valleys of Pierce and Southern King Counties

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 40s to mid 50s. Light wind becoming south 10 to 15 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Morton Temperature Statistics

September Temperature

Renton Municipal Airport (13 miles)

  • Lowest 26 September, 2026

    46 °F

  • Average September

    60.9 °F

  • Highest 9 September, 2026

    79 °F

Climate (2021–2026)

Renton Municipal Airport (13 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    54.7 °F

  • Average High 2021–2026

    62.2 °F
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