McNary Lake Weather Forecast

    • 39
    • 51

    Dense Fog

    • 38
    • 55

    Mostly Sunny

    • 36
    • 55

    Mostly Sunny

    • 33
    • 54

    Mostly Sunny

    • 32
    • 53

    Mostly Sunny

    • 33
    • 52

    Partly Sunny

    • 35
    • 50

    Mostly Cloudy

Today 14 Jan Lower Columbia River

Partly sunny. Areas of dense fog this Morning, then patchy fog this afternoon. Highs in the lower 50s. Winds light.

Tonight 14 Jan Lower Columbia River

Mostly cloudy in the Evening, then becoming partly cloudy. Patchy fog. Lows in the upper 30s. Winds light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

McNary Lake Temperature Statistics

January Temperature

Scappoose Industrial Airpark (3.1 miles)

  • Lowest 8 January, 2026

    30 °F

  • Average January

    41.8 °F

  • Highest 12 January, 2026

    54 °F

Climate (2021–Present)

Scappoose Industrial Airpark (3.1 miles)

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  • Average Low 2021–2026

    44.1 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    63.4 °F
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