Simpson Lake Weather Forecast

    • 52
    • 76

    Increasing Clouds

    • 53
    • 80

    Partly Sunny

    • 53
    • 82

    Mostly Sunny

    • 54
    • 85

    Mostly Sunny

    • 55
    • 85

    Mostly Sunny

    • 54
    • 85

    Mostly Sunny

Today 1 May Okanogan Highlands

Partly cloudy. Highs in the 70s.

Tonight 1 May Okanogan Highlands

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

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Simpson Lake Temperature Statistics

May Temperature

Deer Park, Deer Park Airport (47.2 miles)

  • Lowest

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  • Average May

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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

    60.2 °F
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