Rainier Weather Forecast

    • 40
    • 62

    Becoming Sunny

    • 39
    • 60

    Partly Sunny

    • 44
    • 58

    Mostly Cloudy

    • 46
    • 55

    Rain

    • 41
    • 51

    Rain

    • 36
    • 50

    Rain Likely

Today 4 Feb Lower Columbia River

Mostly cloudy this Morning, then clearing. Highs in the lower 60s. Winds light.

Tonight 4 Feb Lower Columbia River

Mostly clear in the Evening, then becoming partly cloudy. Lows around 40. Winds light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rainier Temperature Statistics

February Temperature

Southwest Washington Regional Airport (2.5 miles)

  • Lowest 1 February, 2026

    41 °F

  • Average February

    48.7 °F

  • Highest 1 February, 2026

    55.9 °F

Climate (2021–Present)

Southwest Washington Regional Airport (2.5 miles)

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  • Average Low 2021–2026

    45.1 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    62.4 °F
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