Montesano Weather Forecast

    • 42
    • 64

    Increasing Clouds

    • 45
    • 71

    Mostly Sunny

    • 48
    • 73

    Mostly Sunny

    • 56
    • 85

    Sunny

    • 60
    • 92

    Mostly Sunny

    • 59
    • 91

    Partly Sunny

Today 10 Jun Lower Chehalis River Valley

Mostly sunny. A slight chance of rain in the morning. Highs in the 60s. Light wind becoming west around 10 Mph in the afternoon.

Tonight 10 Jun Lower Chehalis River Valley

Mostly clear. Lows in the lower to mid 40s. West wind around 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

    58.1 °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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