Winthrop Weather Forecast

    • 39
    • 66

    Increasing Clouds

    • 40
    • 65

    Partly Sunny

    • 32
    • 64

    Partly Sunny

    • 34
    • 61

    Mostly Cloudy

    • 35
    • 61

    Mostly Cloudy

    • 35
    • 64

    Partly Sunny

Today 15 Oct Western Okanogan County

Sunny. Highs in the lower to mid 60s.

Tonight 15 Oct Western Okanogan County

Partly cloudy. Lows in the upper 30s to lower 40s.

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Winthrop Temperature Statistics

October Temperature

Omak Airport (30.4 miles)

  • Lowest 13 October, 2026

    34 °F

  • Average October

    58 °F

  • Highest 4 October, 2026

    79.6 °F

Climate (2021–2026)

Omak Airport (30.4 miles)

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  • Average Low 2021–2026

    40.8 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    63 °F
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