McNary Lake Weather Forecast

    • 56
    • 87

    Rain Showers Likely

    • 54
    • 76

    Chance Rain Showers

    • 55
    • 80

    Mostly Sunny

    • 57
    • 83

    Mostly Sunny

    • 61
    • 89

    Mostly Sunny

    • 62
    • 92

    Partly Sunny

Today 15 Jul Lower Columbia River

Sunny. Highs in the upper 80s. Northwest wind 5 to 10 Mph.

Tonight 15 Jul Lower Columbia River

Partly cloudy. Lows in the mid 50s. Winds light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

McNary Lake Temperature Statistics

July Temperature

Scappoose Industrial Airpark (3.1 miles)

  • Lowest 2 July, 2026

    44.7 °F

  • Average July

    66.6 °F

  • Highest 6 July, 2026

    88.6 °F

Climate (2021–2026)

Scappoose Industrial Airpark (3.1 miles)

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  • Average Low 2021–2026

    44 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    63.5 °F
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