Montesano Weather Forecast

    • 56
    • 85

    Mostly Cloudy

    • 58
    • 88

    Mostly Cloudy

    • 56
    • 87

    Mostly Cloudy

    • 56
    • 76

    Mostly Cloudy

    • 54
    • 71

    Mostly Cloudy

    • 52
    • 70

    Mostly Cloudy

Today 20 Jul Lower Chehalis River Valley

Mostly cloudy until late afternoon then becoming mostly sunny. Highs in the upper 70s to mid 80s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 20 Jul Lower Chehalis River Valley

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid to upper 50s. West wind to 10 Mph in the evening becoming light.

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Montesano Temperature Statistics

July Temperature

Hoquiam, Bowerman Airport (14.9 miles)

  • Lowest 6 July, 2026

    47.6 °F

  • Average July

    59.6 °F

  • Highest 13 July, 2026

    75.7 °F

Climate (2021–2026)

Hoquiam, Bowerman Airport (14.9 miles)

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  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    52.3 °F

  • Average High 2021–2026

    58.6 °F
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