Montesano Weather Forecast

    • 43
    • 58

    Chance Rain

    • 41
    • 56

    Rain

    • 37
    • 54

    Rain

    • 35
    • 51

    Rain

    • 33
    • 53

    Chance Rain

    • 34
    • 56

    Partly Sunny

Today 26 Oct Lower Chehalis River Valley

Mostly cloudy. A chance of Showers in the Morning, then a slight chance of Showers late in the morning. Highs in the mid 50s to lower 60s. East wind around 10 Mph in the morning becoming light.

Tonight 26 Oct Lower Chehalis River Valley

Mostly cloudy. A slight chance of Showers after midnight. Lows in the 40s. Light wind.

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Montesano Temperature Statistics

October Temperature

Hoquiam, Bowerman Airport (14.9 miles)

  • Lowest 23 October, 2026

    36 °F

  • Average October

    55.2 °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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