Montesano Weather Forecast

    • 41
    • 58

    Rain

    • 43
    • 55

    Rain

    • 41
    • 59

    Chance Rain

    • 41
    • 60

    Chance Rain

    • 39
    • 60

    Slight Chance Rain

    • 38
    • 61

    Partly Sunny

Today 24 Oct Lower Chehalis River Valley

Mostly cloudy. Highs in the mid 50s to lower 60s. Light wind.

Tonight 24 Oct Lower Chehalis River Valley

Mostly cloudy. A slight chance of rain in the Evening, then a chance of rain late in the evening. Rain likely after midnight. Rainfall Amounts a quarter to a half inch possible. Lows in the upper 30s to mid 40s. Light wind becoming east to 10 Mph with Gusts to 20 Mph after midnight.

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Montesano Temperature Statistics

October Temperature

Hoquiam, Bowerman Airport (14.9 miles)

  • Lowest 12 October, 2026

    37.7 °F

  • Average October

    55.8 °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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