Winthrop Weather Forecast

    • 58
    • 96

    Smoke

    • 58
    • 95

    Smoke

    • 56
    • 92

    Mostly Sunny

    • 56
    • 91

    Mostly Sunny

    • 55
    • 91

    Mostly Sunny

    • 56
    • 89

    Mostly Sunny

    • 55
    • 87

    Mostly Sunny

Today 6 Aug Western Okanogan County

Sunny. Smoke and haze. Highs in the upper 80s to mid 90s.

Tonight 6 Aug Western Okanogan County

Mostly clear. Smoke. Lows in the upper 50s to mid 60s.

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Winthrop Temperature Statistics

August Temperature

Omak Airport (30.4 miles)

  • Lowest 3 August, 2026

    50 °F

  • Average August

    69.3 °F

  • Highest 1 August, 2026

    91.7 °F

Climate (2021–2026)

Omak Airport (30.4 miles)

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  • Average Low 2021–2026

    40.8 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    62.9 °F
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