McGinnis Lake Weather Forecast

    • 49
    • 73

    Decreasing Clouds

    • 53
    • 67

    Mostly Cloudy

    • 49
    • 66

    Rain Showers Likely

    • 47
    • 61

    Chance Rain Showers

    • 46
    • 64

    Partly Sunny

    • 48
    • 67

    Mostly Sunny

Today 10 Sep Upper Columbia Basin

Mostly cloudy. Patchy blowing dust in the afternoon. Highs in the upper 70s to lower 80s. West wind 5 to 15 Mph. Gusts up to 20 Mph increasing to 30 Mph in the afternoon.

Tonight 10 Sep Upper Columbia Basin

Mostly cloudy in the evening then clearing. Patchy blowing dust in the evening. Lows in the mid 40s to lower 50s. Northwest wind 5 to 15 Mph with Gusts up to 25 Mph.

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McGinnis Lake Temperature Statistics

September Temperature

Omak Airport (41 miles)

  • Lowest 8 September, 2026

    46 °F

  • Average September

    63.8 °F

  • Highest 1 September, 2026

    83.6 °F

Climate (2021–2026)

Omak Airport (41 miles)

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  • Average Low 2021–2026

    40.7 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    62.9 °F
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