Montesano Weather Forecast

    • 48
    • 70

    Mostly Sunny

    • 53
    • 81

    Becoming Sunny

    • 57
    • 90

    Mostly Sunny

    • 56
    • 91

    Mostly Sunny

    • 56
    • 82

    Partly Sunny

    • 55
    • 77

    Partly Sunny

    • 54
    • 74

    Partly Sunny

Today 2 Aug Lower Chehalis River Valley

Partly sunny. Highs in the mid 60s to lower 70s. Light wind becoming northwest 10 to 15 Mph in the afternoon.

Tonight 2 Aug Lower Chehalis River Valley

Mostly clear. Lows in the mid 40s to lower 50s. Northwest wind 10 to 15 Mph becoming north after midnight. Gusts to 25 Mph.

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Montesano Temperature Statistics

August Temperature

Hoquiam, Bowerman Airport (14.9 miles)

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  • Average August

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Climate (2021–2026)

Hoquiam, Bowerman Airport (14.9 miles)

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  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    52.3 °F

  • Average High 2021–2026

    58.6 °F
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