South Twin Lake Weather Forecast

    • 47
    • 64

    Mostly Cloudy

    • 47
    • 68

    Partly Sunny

    • 51
    • 70

    Partly Sunny

    • 52
    • 73

    Mostly Sunny

    • 51
    • 72

    Partly Sunny

    • 49
    • 69

    Partly Sunny

Today 19 May Okanogan Highlands

Partly cloudy in the Morning, then mostly cloudy with a chance of rain Showers in the afternoon. Highs in the mid 60s to lower 70s. Chance of precipitation 20 percent.

Tonight 19 May Okanogan Highlands

Mostly cloudy. Lows in the 40s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Twin Lake Temperature Statistics

May Temperature

Deer Park, Deer Park Airport (48.5 miles)

  • Lowest 17 May, 2026

    28.9 °F

  • Average May

    54.2 °F

  • Highest 12 May, 2026

    81.6 °F

Climate (2021–Present)

Deer Park, Deer Park Airport (48.5 miles)

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  • Average Low 2021–2026

    35.9 °F

  • Average 2021–2026

    48.5 °F

  • Average High 2021–2026

    60.3 °F
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