Montesano Weather Forecast

    • 57
    • 89

    Becoming Sunny

    • 50
    • 69

    Partly Sunny

    • 50
    • 74

    Mostly Sunny

    • 53
    • 82

    Partly Sunny

    • 53
    • 77

    Partly Sunny

    • 53
    • 71

    Partly Sunny

Today 15 Jun Lower Chehalis River Valley

Mostly sunny. Highs in the 80s. Light wind becoming west 10 to 15 Mph in the afternoon.

Tonight 15 Jun Lower Chehalis River Valley

Mostly clear. Lows in the mid to upper 50s. West wind 10 to 15 Mph with Gusts to 25 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

    57.8 °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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