Simpson Lake Weather Forecast

    • 31
    • 47

    Increasing Clouds

    • 33
    • 44

    Chance Rain

    • 31
    • 46

    Partly Sunny

    • 31
    • 50

    Mostly Sunny

    • 34
    • 50

    Partly Sunny

    • 36
    • 49

    Slight Chance Rain

    • 37
    • 52

    Chance Rain

Today 3 Mar Okanogan Highlands

Sunny. Highs in the mid 40s to lower 50s.

Tonight 3 Mar Okanogan Highlands

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Simpson Lake Temperature Statistics

March Temperature

Deer Park, Deer Park Airport (47.2 miles)

  • Lowest 1 March, 2025

    28 °F

  • Average March

    42.2 °F

  • Highest 1 March, 2025

    60.1 °F

Climate (2020–Present)

Deer Park, Deer Park Airport (47.2 miles)

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  • Average Low 2020–2025

    35.1 °F

  • Average 2020–2025

    47.7 °F

  • Average High 2020–2025

    59.4 °F
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