Simpson Lake Weather Forecast

    • 55
    • 86

    Mostly Sunny

    • 54
    • 82

    Mostly Sunny

    • 56
    • 85

    Mostly Sunny

    • 57
    • 88

    Mostly Sunny

    • 54
    • 83

    Mostly Sunny

    • 54
    • 79

    Partly Sunny

Today 16 Jun Okanogan Highlands

Mostly clear. Highs in the upper 70s to mid 80s. West wind 5 to 15 Mph with Gusts up to 40 Mph in the afternoon.

Tonight 16 Jun Okanogan Highlands

Mostly clear. Lows in the upper 40s to upper 50s. Northwest wind 5 to 15 Mph with Gusts up to 40 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Simpson Lake Temperature Statistics

June Temperature

Deer Park, Deer Park Airport (47.2 miles)

  • Lowest 8 June, 2026

    29.6 °F

  • Average June

    55.6 °F

  • Highest 13 June, 2026

    77 °F

Climate (2021–Present)

Deer Park, Deer Park Airport (47.2 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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