South Montesano Weather Forecast

    • 52
    • 68

    Mostly Cloudy

    • 48
    • 69

    Partly Sunny

    • 49
    • 72

    Mostly Sunny

    • 51
    • 72

    Partly Sunny

    • 47
    • 62

    Slight Chance Rain

    • 43
    • 61

    Partly Sunny

Today 5 Oct Lower Chehalis River Valley

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

Tonight 5 Oct Lower Chehalis River Valley

Mostly cloudy. Lows in the lower to mid 50s. West wind to 10 Mph in the evening becoming light.

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South Montesano Temperature Statistics

October Temperature

Hoquiam, Bowerman Airport (14.3 miles)

  • Lowest 1 October, 2026

    50 °F

  • Average October

    58.5 °F

  • Highest 1 October, 2026

    66.9 °F

Climate (2021–2026)

Hoquiam, Bowerman Airport (14.3 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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