Montesano Weather Forecast

    • 48
    • 73

    Increasing Clouds

    • 53
    • 81

    Partly Sunny

    • 51
    • 77

    Partly Sunny

    • 51
    • 69

    Partly Sunny

    • 52
    • 78

    Mostly Sunny

    • 56
    • 87

    Partly Sunny

Today 17 Jun Lower Chehalis River Valley

Mostly cloudy in the morning then becoming mostly sunny. Highs in the upper 60s to mid 70s. Northwest wind to 10 Mph becoming west in the afternoon.

Tonight 17 Jun Lower Chehalis River Valley

Mostly clear. Lows near 50. West wind 10 to 15 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

    59.1 °F

  • Highest 14 June, 2026

    86 °F

Climate (2021–2026)

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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