Kelso Weather Forecast

    • 55
    • 75

    Chance Rain Showers

    • 57
    • 70

    Rain Showers

    • 55
    • 66

    Rain Showers

    • 53
    • 71

    Chance Rain Showers

    • 56
    • 74

    Slight Chance Rain Showers

    • 57
    • 76

    Chance Rain Showers

Today 7 Sep Outer Southeast Portland Metro

Mostly cloudy in the Morning, then becoming mostly sunny. A 20 percent chance of Showers. Highs in the upper 70s. Winds light.

Tonight 7 Sep Outer Southeast Portland Metro

Partly cloudy in the Evening, then mostly cloudy with a chance of Showers after midnight. Lows in the mid 50s. Winds light. Chance of rain 30 percent.

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Kelso Temperature Statistics

September Temperature

Portland, Portland-Troutdale Airport (9.9 miles)

  • Lowest 2 September, 2025

    55.9 °F

  • Average September

    71.4 °F

  • Highest 2 September, 2025

    89.1 °F

Climate (2020–Present)

Portland, Portland-Troutdale Airport (9.9 miles)

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  • Average Low 2020–2025

    47.6 °F

  • Average 2020–2025

    56.1 °F

  • Average High 2020–2025

    65.2 °F
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