Square Lake Weather Forecast

    • 48
    • 66

    Mostly Sunny

    • 41
    • 64

    Mostly Cloudy

    • 37
    • 51

    Mostly Cloudy

    • 37
    • 48

    Mostly Cloudy

    • 37
    • 48

    Rain Showers Likely

    • 32
    • 40

    Rain Showers Likely

Today 20 Sep Western Chelan County

Sunny. Highs in the upper 70s to upper 80s.

Tonight 20 Sep Western Chelan County

Mostly clear. Lows in the lower 50s to lower 60s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Square Lake Temperature Statistics

September Temperature

Stampede Pass (27.3 miles)

  • Lowest 3 September, 2026

    39.9 °F

  • Average September

    50.3 °F

  • Highest 9 September, 2026

    71.1 °F

Climate (2021–2026)

Stampede Pass (27.3 miles)

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  • Average Low 2021–2026

    36.2 °F

  • Average 2021–2026

    41.5 °F

  • Average High 2021–2026

    48.2 °F
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