Montesano Weather Forecast

    • 36
    • 60

    Decreasing Clouds

    • 35
    • 60

    Partly Sunny

    • 41
    • 57

    Rain Likely

    • 41
    • 59

    Chance Rain

    • 40
    • 59

    Chance Rain

    • 38
    • 59

    Chance Rain

Today 22 Oct Lower Chehalis River Valley

Partly sunny. Highs in the mid 50s to lower 60s. Northwest wind to 10 Mph increasing to 10 to 15 Mph with Gusts to 25 Mph in the afternoon.

Tonight 22 Oct Lower Chehalis River Valley

Partly cloudy. Lows in the mid 30s to lower 40s. Northwest wind 10 to 15 Mph with Gusts to 30 Mph decreasing to 10 Mph or less 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

    56 °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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