Montesano Weather Forecast

    • 45
    • 70

    Becoming Sunny

    • 48
    • 74

    Mostly Sunny

    • 57
    • 87

    Sunny

    • 59
    • 94

    Mostly Sunny

    • 58
    • 89

    Partly Sunny

    • 54
    • 76

    Partly Sunny

Today 11 Jun Lower Chehalis River Valley

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

Tonight 11 Jun Lower Chehalis River Valley

Mostly clear. Lows in the 40s. West wind around 10 Mph becoming northwest to 10 Mph after midnight. Gusts to 20 Mph.

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Montesano Temperature Statistics

June Temperature

Hoquiam, Bowerman Airport (14.9 miles)

  • Lowest 1 June, 2026

    42.7 °F

  • Average June

    57.7 °F

  • Highest 2 June, 2026

    82.7 °F

Climate (2021–Present)

Hoquiam, Bowerman Airport (14.9 miles)

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  • Average Low 2021–2026

    46.4 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    58.7 °F
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