Montesano Weather Forecast

    • 59
    • 96

    Chance Rain

    • 55
    • 72

    Chance Rain

    • 55
    • 74

    Mostly Cloudy

    • 56
    • 68

    Chance Rain

    • 54
    • 70

    Chance Rain

    • 53
    • 69

    Mostly Cloudy

Today 22 Jul Lower Chehalis River Valley

Mostly sunny. Patchy fog in the morning. Highs in the upper 80s to mid 90s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 22 Jul Lower Chehalis River Valley

Partly cloudy in the evening then becoming mostly cloudy. A slight chance of Showers in the Evening, then a slight chance of Thunderstorms late in the evening. A slight chance of Thunderstorms in the morning. Lows near 60. West wind around 10 Mph becoming southwest to 10 Mph after midnight. Gusts to 20 Mph.

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Montesano Temperature Statistics

July Temperature

Hoquiam, Bowerman Airport (14.9 miles)

  • Lowest 6 July, 2026

    47.6 °F

  • Average July

    60 °F

  • Highest 20 July, 2026

    77 °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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