Square Lake Weather Forecast

    • 33
    • 50

    Gradual Clearing

    • 38
    • 49

    Rain Showers Likely

    • 40
    • 47

    Rain Showers

    • 38
    • 49

    Slight Chance Rain/Snow

    • 39
    • 51

    Mostly Cloudy

    • 38
    • 49

    Partly Sunny

Today 27 Sep Western Chelan County

Sunny. Highs in the lower 60s to lower 70s.

Tonight 27 Sep Western Chelan County

Mostly clear. Lows in the upper 30s to upper 40s.

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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

    51.7 °F

  • Highest 20 September, 2026

    73 °F

Climate (2021–2026)

Stampede Pass (27.3 miles)

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  • Average Low 2021–2026

    36.1 °F

  • Average 2021–2026

    41.5 °F

  • Average High 2021–2026

    48.2 °F
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