Montesano Weather Forecast

    • 52
    • 73

    Decreasing Clouds

    • 52
    • 78

    Partly Sunny

    • 56
    • 84

    Mostly Cloudy

    • 57
    • 84

    Partly Sunny

    • 56
    • 81

    Mostly Cloudy

    • 55
    • 77

    Partly Sunny

Today 18 Jul Lower Chehalis River Valley

Mostly cloudy in the morning then becoming mostly sunny. Patchy fog in the morning. Highs in the upper 60s to mid 70s. Light wind becoming west 10 to 15 Mph in the afternoon.

Tonight 18 Jul Lower Chehalis River Valley

Mostly clear in the evening then becoming mostly cloudy. Lows in the lower to mid 50s. West wind to 10 Mph. Gusts to 20 Mph in the evening.

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Montesano Temperature Statistics

July Temperature

Hoquiam, Bowerman Airport (14.9 miles)

  • Lowest 13 July, 2026

    46.9 °F

  • Average July

    59.4 °F

  • Highest 13 July, 2026

    73 °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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