Montesano Weather Forecast

    • 55
    • 71

    Rain

    • 43
    • 60

    Chance Rain

    • 40
    • 59

    Mostly Sunny

    • 38
    • 64

    Mostly Sunny

    • 42
    • 64

    Partly Sunny

    • 46
    • 61

    Slight Chance Rain

    • 43
    • 62

    Partly Sunny

Today 8 Oct Lower Chehalis River Valley

Partly sunny. Highs in the mid 60s to lower 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 8 Oct Lower Chehalis River Valley

Mostly cloudy. A chance of rain in the morning. Lows in the lower to mid 50s. West wind around 10 Mph. Gusts to 20 Mph after midnight.

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Montesano Temperature Statistics

October Temperature

Hoquiam, Bowerman Airport (14.9 miles)

  • Lowest 1 October, 2026

    49.6 °F

  • Average October

    59.2 °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

    58.6 °F
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