Montesano Weather Forecast

    • 40
    • 68

    Increasing Clouds

    • 35
    • 60

    Mostly Cloudy

    • 37
    • 59

    Partly Sunny

    • 40
    • 56

    Chance Rain

    • 40
    • 60

    Chance Rain

    • 38
    • 61

    Partly Sunny

Today 21 Oct Lower Chehalis River Valley

Sunny. Highs in the mid 60s to lower 70s. Light wind.

Tonight 21 Oct Lower Chehalis River Valley

Mostly cloudy. Lows in the upper 30s to mid 40s. 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

    56.4 °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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