Columbia River - Tomahawk Island Weather Forecast

    • 50
    • 65

    Chance Rain Showers

    • 48
    • 67

    Mostly Cloudy

    • 46
    • 63

    Chance Rain Showers

    • 43
    • 59

    Rain Showers Likely

    • 44
    • 66

    Partly Sunny

    • 48
    • 72

    Partly Sunny

Today 13 May Inner Portland Metro

Mostly cloudy Early, then becoming partly sunny. A 50 percent chance of Showers. Highs in the mid 60s. Southwest wind 15 to 20 Mph with Gusts up to 35 Mph. Rainfall Amounts less than a tenth of an inch.

Tonight 13 May Inner Portland Metro

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 40s. Southwest wind 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Columbia River - Tomahawk Island Temperature Statistics

May Temperature

Pearson Airfield (0.6 miles)

  • Lowest 9 May, 2026

    46.7 °F

  • Average May

    63.4 °F

  • Highest 3 May, 2026

    91.7 °F

Climate (2021–Present)

Pearson Airfield (0.6 miles)

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  • Average Low 2021–2026

    46.4 °F

  • Average 2021–2026

    55.4 °F

  • Average High 2021–2026

    64.8 °F
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