Montesano Weather Forecast

    • 36
    • 51

    Rain

    • 35
    • 52

    Rain Likely

    • 34
    • 53

    Chance Rain

    • 35
    • 55

    Partly Sunny

    • 37
    • 55

    Slight Chance Rain

    • 37
    • 58

    Mostly Cloudy

Today 29 Oct Lower Chehalis River Valley

Rain at Times in the morning. A slight chance of Thunderstorms through the day. Rain Showers in the afternoon. Rainfall Amounts a quarter to a half inch Possible, except higher Amounts possible in Thunderstorms. Highs in the lower to mid 50s. Southeast wind to 10 Mph in the morning becoming light.

Tonight 29 Oct Lower Chehalis River Valley

Mostly cloudy. Showers likely in the Evening, then a chance of Showers late in the evening. A slight chance of Showers after midnight. Rainfall Amounts a tenth to a quarter of an inch possible. Lows in the mid 30s to lower 40s. Light wind becoming east to 10 Mph 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

    54.6 °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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