South Twin Lake Weather Forecast

    • 47
    • 67

    Partly Sunny

    • 51
    • 70

    Rain Showers

    • 40
    • 57

    Rain Showers

    • 41
    • 57

    Partly Sunny

    • 41
    • 58

    Mostly Cloudy

    • 41
    • 58

    Partly Sunny

Today 23 Sep Okanogan Highlands

Mostly cloudy. Highs in the upper 60s to mid 70s.

Tonight 23 Sep Okanogan Highlands

Mostly cloudy. Lows in the lower 40s to lower 50s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Twin Lake Temperature Statistics

September Temperature

Deer Park, Deer Park Airport (48.5 miles)

  • Lowest 14 September, 2026

    39.7 °F

  • Average September

    58.9 °F

  • Highest 1 September, 2026

    81.6 °F

Climate (2021–2026)

Deer Park, Deer Park Airport (48.5 miles)

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  • Average Low 2021–2026

    35.7 °F

  • Average 2021–2026

    48.3 °F

  • Average High 2021–2026

    60.2 °F
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