Montesano Weather Forecast

    • 35
    • 60

    Increasing Clouds

    • 41
    • 57

    Rain

    • 41
    • 56

    Rain

    • 39
    • 60

    Chance Rain

    • 39
    • 60

    Mostly Cloudy

    • 39
    • 60

    Mostly Cloudy

Today 23 Oct Lower Chehalis River Valley

Sunny. Highs in the mid 50s to lower 60s. Light wind.

Tonight 23 Oct Lower Chehalis River Valley

Mostly clear in the evening then becoming mostly cloudy. Lows in the 30s. Light wind.

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Montesano Temperature Statistics

October Temperature

Hoquiam, Bowerman Airport (14.9 miles)

  • Lowest 12 October, 2026

    37.7 °F

  • Average October

    56 °F

  • Highest 3 October, 2026

    73.7 °F

Climate (2021–2026)

Hoquiam, Bowerman Airport (14.9 miles)

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  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    58.7 °F
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