Montesano Weather Forecast

    • 53
    • 72

    Rain

    • 39
    • 62

    Slight Chance Rain

    • 40
    • 61

    Mostly Cloudy

    • 38
    • 59

    Mostly Cloudy

    • 37
    • 61

    Mostly Sunny

    • 41
    • 63

    Partly Sunny

    • 40
    • 58

    Slight Chance Rain

Today 16 Oct Lower Chehalis River Valley

Mostly sunny. Highs in the upper 50s.

Tonight 16 Oct Lower Chehalis River Valley

Cloudy in the Evening, then rain at Times after midnight. Mostly cloudy with a chance of rain late in the night. Rainfall Amounts less than a tenth of an inch likely. Lows in the lower to mid 50s. Light wind becoming southwest to 10 Mph with Gusts to 20 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Montesano Temperature Statistics

October Temperature

Hoquiam, Bowerman Airport (14.9 miles)

  • Lowest 12 October, 2026

    37.7 °F

  • Average October

    56.2 °F

  • Highest 3 October, 2026

    73.7 °F

Climate (2021–2026)

Hoquiam, Bowerman Airport (14.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    58.7 °F
Get WillyWeather+ to remove ads