Rainier Weather Forecast

    • 54
    • 58

    Rain

    • 45
    • 61

    Rain

    • 45
    • 57

    Chance Rain

    • 47
    • 55

    Rain

    • 52
    • 58

    Rain

    • 50
    • 58

    Rain

Today 31 Oct Lower Columbia River

Mostly cloudy. A chance of rain this afternoon. Highs around 60. Southeast wind 5 to 10 Mph. Chance of rain 50 percent. Rainfall Amounts less than a tenth of an inch.

Tonight 31 Oct Lower Columbia River

Rain. Lows in the lower 50s. Southeast wind 5 to 10 Mph. Chance of rain near 100 percent. Rainfall Amounts a half to three Quarters of an inch.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Rainier Temperature Statistics

October Temperature

Southwest Washington Regional Airport (2.5 miles)

  • Lowest 15 October, 2025

    32 °F

  • Average October

    53.3 °F

  • Highest 7 October, 2025

    80.1 °F

Climate (2020–Present)

Southwest Washington Regional Airport (2.5 miles)

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

  • Average Low 2020–2025

    45 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    62.3 °F
Get WillyWeather+ to remove ads