Copalis River Mouth Weather Forecast

    • 58
    • 63

    Rain

    • 52
    • 61

    Chance Rain

    • 55
    • 62

    Mostly Sunny

    • 57
    • 70

    Mostly Sunny

    • 54
    • 60

    Chance Rain

    • 51
    • 59

    Slight Chance Rain

    • 53
    • 61

    Partly Sunny

Today 13 Sep Grays Harbor County Coast

Mostly cloudy. Areas of fog in the Morning, then patchy fog late in the morning. Highs in the mid 60s to lower 70s. Light wind becoming south to 10 Mph in the afternoon.

Tonight 13 Sep Grays Harbor County Coast

Patchy fog. A slight chance of rain in the evening. Showers and a slight chance of Thunderstorms in the late evening and early Morning, then rain likely late in the night. Rainfall Amounts a half inch to one inch Possible, except higher Amounts possible in Thunderstorms. Lows in the mid to upper 50s. South wind to 10 Mph. Gusts to 20 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Copalis River Mouth Temperature Statistics

September Temperature

Hoquiam, Bowerman Airport (16.8 miles)

  • Lowest 2 September, 2025

    53.1 °F

  • Average September

    59.9 °F

  • Highest 2 September, 2025

    73 °F

Climate (2020–Present)

Hoquiam, Bowerman Airport (16.8 miles)

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

  • Average Low 2020–2025

    46.2 °F

  • Average 2020–2025

    52.1 °F

  • Average High 2020–2025

    58.3 °F
Get WillyWeather+ to remove ads