Siouxon Co Park Weather Forecast

    • 50
    • 60

    Rain Likely

    • 36
    • 55

    Rain

    • 32
    • 49

    Chance Rain

    • 37
    • 53

    Mostly Cloudy

    • 42
    • 56

    Rain

    • 37
    • 52

    Rain

Today 19 Mar South Washington Cascade Foothills

Mostly cloudy with a 50 percent chance of rain. Highs in the lower 60s. Southeast wind 5 to 10 Mph. Rainfall Amounts around a tenth of an inch.

Tonight 19 Mar South Washington Cascade Foothills

Rain Likely, mainly in the evening. Lows around 50. Winds light. Chance of rain 70 percent. Rainfall Amounts a tenth to a quarter of an inch.

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Siouxon Co Park Temperature Statistics

March Temperature

Southwest Washington Regional Airport (29.2 miles)

  • Lowest 10 March, 2026

    32 °F

  • Average March

    46.5 °F

  • Highest 16 March, 2026

    66 °F

Climate (2021–Present)

Southwest Washington Regional Airport (29.2 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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