Simpson Lake Weather Forecast

    • 33
    • 58

    Mostly Sunny

    • 35
    • 61

    Mostly Sunny

    • 36
    • 62

    Mostly Sunny

    • 37
    • 61

    Partly Sunny

    • 42
    • 59

    Rain Showers Likely

    • 38
    • 56

    Chance Rain Showers

Today 14 Oct Okanogan Highlands

Widespread frost in the morning. Sunny. Highs in the mid 50s to lower 60s. Gusts up to 20 Mph in the morning.

Tonight 14 Oct Okanogan Highlands

Mostly clear. Lows in the mid 20s to mid 30s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Simpson Lake Temperature Statistics

October Temperature

Deer Park, Deer Park Airport (47.2 miles)

  • Lowest 6 October, 2025

    26.1 °F

  • Average October

    52.6 °F

  • Highest 9 October, 2025

    80.1 °F

Climate (2020–Present)

Deer Park, Deer Park Airport (47.2 miles)

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  • Average Low 2020–2025

    35.5 °F

  • Average 2020–2025

    48.2 °F

  • Average High 2020–2025

    60 °F
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