Montesano Weather Forecast

    • 36
    • 48

    Rain Showers

    • 37
    • 46

    Rain

    • 37
    • 48

    Rain

    • 36
    • 44

    Rain

    • 40
    • 46

    Rain Likely

    • 40
    • 49

    Slight Chance Rain

    • 41
    • 51

    Chance Rain

Today 4 Jan Lower Chehalis River Valley

Patchy fog in the morning. Rain in the morning. A chance of rain late in the Morning, then rain in the afternoon. Rainfall Amounts a quarter to a half inch possible. Highs near 50. Southwest wind 15 to 20 Mph becoming south 10 to 15 Mph in the afternoon. Gusts to 30 Mph.

Tonight 4 Jan Lower Chehalis River Valley

Showers and a slight chance of Thunderstorms in the Evening, then rain likely after midnight. A chance of rain late in the night. Rainfall Amounts a quarter to a half inch Possible, except higher Amounts possible in Thunderstorms. Lows in the mid to upper 30s. South wind around 10 Mph in the evening becoming light.

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Montesano Temperature Statistics

January Temperature

Hoquiam, Bowerman Airport (14.9 miles)

  • Lowest 1 January, 2026

    33.1 °F

  • Average January

    41.1 °F

  • Highest 2 January, 2026

    48 °F

Climate (2021–Present)

Hoquiam, Bowerman Airport (14.9 miles)

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  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    52.2 °F

  • Average High 2021–2026

    58.4 °F
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