Montesano Weather Forecast

    • 52
    • 67

    Chance Rain

    • 50
    • 64

    Slight Chance Rain

    • 50
    • 66

    Mostly Cloudy

    • 53
    • 70

    Chance Rain

    • 54
    • 64

    Rain Likely

    • 52
    • 61

    Rain Likely

Today 28 Aug Lower Chehalis River Valley

Partly sunny. Highs in the 60s to lower 70s. Light wind becoming west around 10 Mph in the afternoon.

Tonight 28 Aug Lower Chehalis River Valley

Mostly cloudy. A slight chance of Showers after midnight. A chance of Showers in the morning. Lows in the lower to mid 50s. West wind around 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Montesano Temperature Statistics

August Temperature

Hoquiam, Bowerman Airport (14.9 miles)

  • Lowest 3 August, 2026

    49.6 °F

  • Average August

    62.5 °F

  • Highest 24 August, 2026

    82.7 °F

Climate (2021–2026)

Hoquiam, Bowerman Airport (14.9 miles)

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  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    58.6 °F
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