Rainier Weather Forecast

    • 30
    • 49

    Increasing Clouds

    • 39
    • 43

    Rain

    • 35
    • 49

    Rain

    • 31
    • 41

    Rain/Snow

    • 30
    • 41

    Rain/Snow

    • 29
    • 40

    Rain/Snow Likely

Today 29 Jan Lower Columbia River

Widespread frost this morning. Sunny. Highs around 50. Winds light.

Tonight 29 Jan Lower Columbia River

Mostly clear in the Evening, then becoming mostly cloudy. Areas of frost in the evening. Patchy fog. Widespread frost after midnight. Lows in the upper 20s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rainier Temperature Statistics

January Temperature

Southwest Washington Regional Airport (2.5 miles)

  • Lowest 26 January, 2025

    19.9 °F

  • Average January

    38.4 °F

  • Highest 8 January, 2025

    54 °F

Climate (2020–Present)

Southwest Washington Regional Airport (2.5 miles)

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  • Average Low 2020–2025

    44.9 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    62.1 °F
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