Riverside County Park Weather Forecast

    • 55
    • 83

    Increasing Clouds

    • 56
    • 75

    Mostly Cloudy

    • 54
    • 76

    Mostly Cloudy

    • 54
    • 80

    Partly Sunny

    • 54
    • 75

    Mostly Sunny

    • 53
    • 79

    Mostly Sunny

Today 24 Jul Cowlitz County Lowlands

Patchy fog in the morning. Mostly sunny. Highs in the mid 80s. Northwest wind 5 to 10 Mph.

Tonight 24 Jul Cowlitz County Lowlands

Partly cloudy. Patchy fog. Lows in the mid 50s. Winds light.

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Riverside County Park Temperature Statistics

July Temperature

Southwest Washington Regional Airport (5 miles)

  • Lowest 9 July, 2026

    48.9 °F

  • Average July

    65.4 °F

  • Highest 21 July, 2026

    97 °F

Climate (2021–2026)

Southwest Washington Regional Airport (5 miles)

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  • Average Low 2021–2026

    45.2 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    62.5 °F
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