Montesano Weather Forecast

    • 39
    • 60

    Becoming Sunny

    • 36
    • 63

    Mostly Sunny

    • 41
    • 63

    Partly Sunny

    • 48
    • 60

    Chance Rain

    • 48
    • 64

    Mostly Cloudy

    • 48
    • 69

    Partly Sunny

    • 50
    • 69

    Slight Chance Rain

Today 10 Oct Lower Chehalis River Valley

Partly sunny with a slight chance of rain. Highs in the lower to mid 60s.

Tonight 10 Oct Lower Chehalis River Valley

Mostly clear. Lows near 40. Light wind.

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Montesano Temperature Statistics

October Temperature

Hoquiam, Bowerman Airport (14.9 miles)

  • Lowest 7 October, 2026

    48 °F

  • Average October

    58.5 °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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