Montesano Weather Forecast

    • 48
    • 74

    Becoming Sunny

    • 57
    • 87

    Mostly Sunny

    • 59
    • 94

    Mostly Sunny

    • 58
    • 88

    Partly Sunny

    • 52
    • 72

    Partly Sunny

    • 50
    • 71

    Mostly Sunny

Today 12 Jun Lower Chehalis River Valley

Sunny. Highs in the upper 60s to mid 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 12 Jun Lower Chehalis River Valley

Mostly clear. Lows near 50. West 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

    57.4 °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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