Winthrop Weather Forecast

    • 51
    • 84

    Mostly Sunny

    • 55
    • 87

    Mostly Sunny

    • 59
    • 92

    Sunny

    • 63
    • 97

    Hot

    • 65
    • 100

    Hot

    • 64
    • 98

    Hot

    • 63
    • 97

    Hot

Today 20 Aug Western Okanogan County

Sunny. Highs in the upper 70s to mid 80s. Gusts up to 20 Mph in the afternoon.

Tonight 20 Aug Western Okanogan County

Mostly clear. Lows in the 50s.

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Winthrop Temperature Statistics

August Temperature

Omak Airport (30.4 miles)

  • Lowest 8 August, 2025

    49.6 °F

  • Average August

    74.4 °F

  • Highest 12 August, 2025

    99.6 °F

Climate (2020–Present)

Omak Airport (30.4 miles)

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  • Average Low 2020–2025

    40.5 °F

  • Average 2020–2025

    51.6 °F

  • Average High 2020–2025

    62.6 °F
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