Montesano Weather Forecast

    • 57
    • 88

    Mostly Sunny

    • 59
    • 93

    Mostly Sunny

    • 58
    • 87

    Partly Sunny

    • 51
    • 71

    Partly Sunny

    • 50
    • 72

    Mostly Sunny

    • 51
    • 76

    Partly Sunny

Today 13 Jun Lower Chehalis River Valley

Sunny. Highs in the 80s to lower 90s. Light wind becoming northeast to 10 Mph in the afternoon.

Tonight 13 Jun Lower Chehalis River Valley

Mostly clear. Lows near 60. North wind to 10 Mph in the evening becoming light.

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Montesano Temperature Statistics

June Temperature

Hoquiam, Bowerman Airport (14.9 miles)

  • Lowest 1 June, 2026

    42.7 °F

  • Average June

    57.3 °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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