Lake Sacajawea Park Weather Forecast

    • 42
    • 56

    Rain

    • 39
    • 53

    Rain

    • 37
    • 54

    Rain Showers Likely

    • 38
    • 61

    Mostly Sunny

    • 42
    • 66

    Partly Sunny

    • 45
    • 70

    Mostly Cloudy

Today 31 Mar Cowlitz County Lowlands

Widespread frost this morning. Mostly cloudy this Morning, then partly sunny with a slight chance of rain this afternoon. Highs in the mid 50s. Winds light. Chance of rain 20 percent.

Tonight 31 Mar Cowlitz County Lowlands

A slight chance of rain in the Evening, then rain after midnight. Lows in the lower 40s. South wind 5 to 10 Mph. Chance of rain near 100 percent. Rainfall Amounts a tenth to a quarter of an inch.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Sacajawea Park Temperature Statistics

March Temperature

Southwest Washington Regional Airport (3.1 miles)

  • Lowest 22 March, 2026

    28.9 °F

  • Average March

    47.4 °F

  • Highest 16 March, 2026

    66 °F

Climate (2021–Present)

Southwest Washington Regional Airport (3.1 miles)

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  • Average Low 2021–2026

    45.1 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    62.5 °F
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