Mint Valley Weather Forecast

    • 53
    • 75

    Increasing Clouds

    • 52
    • 74

    Mostly Sunny

    • 51
    • 78

    Mostly Sunny

    • 58
    • 74

    Mostly Cloudy

    • 51
    • 69

    Chance Rain

    • 53
    • 74

    Partly Sunny

    • 56
    • 74

    Chance Rain

Today 17 Sep Cowlitz County Lowlands

Sunny. Highs in the upper 70s. Northwest wind 5 to 10 Mph.

Tonight 17 Sep Cowlitz County Lowlands

Partly cloudy. Lows in the lower 50s. Northwest wind 5 to 10 Mph.

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Mint Valley Temperature Statistics

September Temperature

Southwest Washington Regional Airport (5 miles)

  • Lowest 15 September, 2025

    45 °F

  • Average September

    65.2 °F

  • Highest 2 September, 2025

    88 °F

Climate (2020–Present)

Southwest Washington Regional Airport (5 miles)

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  • Average Low 2020–2025

    45 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    62.3 °F
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