Mirror Lake Weather Forecast

    • 52
    • 63

    Rain

    • 47
    • 62

    Rain

    • 46
    • 63

    Mostly Cloudy

    • 47
    • 64

    Partly Sunny

    • 51
    • 63

    Mostly Cloudy

    • 51
    • 62

    Chance Rain

    • 50
    • 64

    Mostly Cloudy

Today 24 Sep Lowlands of Pierce and Southern King Counties

Partly sunny with a slight chance of rain. Highs in the lower to mid 60s.

Tonight 24 Sep Lowlands of Pierce and Southern King Counties

Rain likely in the Evening, then rain at Times after midnight. Rainfall Amounts a quarter to a half inch possible. Lows in the upper 40s to mid 50s. North wind to 10 Mph in the evening becoming light.

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  • Temperature Real-Time

Mirror Lake Temperature Statistics

September Temperature

Seattle, Seattle-Tacoma International Airport (8.1 miles)

  • Lowest 20 September, 2026

    50.6 °F

  • Average September

    62.2 °F

  • Highest 9 September, 2026

    78.7 °F

Climate (2021–2026)

Seattle, Seattle-Tacoma International Airport (8.1 miles)

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  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    61.3 °F
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