Montesano Weather Forecast

    • 51
    • 65

    Mostly Cloudy

    • 50
    • 62

    Mostly Cloudy

    • 48
    • 63

    Mostly Cloudy

    • 49
    • 63

    Slight Chance Rain

    • 49
    • 67

    Partly Sunny

    • 49
    • 72

    Partly Sunny

Today 29 Jun Lower Chehalis River Valley

Cloudy. Highs in the 60s. Light wind becoming west around 10 Mph in the afternoon.

Tonight 29 Jun Lower Chehalis River Valley

Cloudy. Lows in the lower to mid 50s. West wind around 10 Mph. Gusts to 20 Mph after midnight.

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Montesano Temperature Statistics

June Temperature

Hoquiam, Bowerman Airport (14.9 miles)

  • Lowest 1 June, 2026

    42.7 °F

  • Average June

    59.6 °F

  • Highest 14 June, 2026

    87.7 °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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