Montesano Weather Forecast

    • 38
    • 63

    Sunny

    • 41
    • 64

    Partly Sunny

    • 48
    • 61

    Mostly Cloudy

    • 50
    • 65

    Mostly Cloudy

    • 48
    • 72

    Partly Sunny

    • 52
    • 72

    Chance Rain

    • 46
    • 64

    Chance Rain

Today 11 Oct Lower Chehalis River Valley

Mostly cloudy. A slight chance of rain in the afternoon. Highs near 60.

Tonight 11 Oct Lower Chehalis River Valley

Clear. Lows in the mid 30s to lower 40s. Light wind.

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Montesano Temperature Statistics

October Temperature

Hoquiam, Bowerman Airport (14.9 miles)

  • Lowest 7 October, 2026

    47.6 °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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