Montesano Weather Forecast

    • 38
    • 54

    Rain

    • 36
    • 53

    Rain

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    • 53

    Rain

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    • 54

    Chance Rain

    • 36
    • 57

    Mostly Cloudy

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    • 58

    Mostly Cloudy

Today 28 Oct Lower Chehalis River Valley

Showers in the Morning, then Showers likely late in the morning. A chance of Showers in the afternoon. Rainfall Amounts less than a tenth of an inch likely. Highs in the lower to mid 50s. Southwest wind to 10 Mph.

Tonight 28 Oct Lower Chehalis River Valley

Showers likely in the Evening, then Showers and a slight chance of Thunderstorms after midnight. Rainfall Amounts a tenth to a quarter of an inch Possible, except higher Amounts possible in Thunderstorms. Lows in the upper 30s to mid 40s. South wind to 10 Mph becoming southeast after midnight.

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Montesano Temperature Statistics

October Temperature

Hoquiam, Bowerman Airport (14.9 miles)

  • Lowest 23 October, 2026

    35.7 °F

  • Average October

    54.8 °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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