Caswell Memorial State Park Weather Forecast

    • 59
    • 90

    Decreasing Clouds

    • 55
    • 86

    Mostly Sunny

    • 54
    • 83

    Sunny

    • 55
    • 87

    Mostly Sunny

    • 56
    • 87

    Partly Sunny

    • 56
    • 84

    Partly Sunny

Today 12 Aug Central San Joaquin County Including Stockton Metro

Mostly cloudy in the morning then becoming partly cloudy. Highs around 90. Northwest Winds up to 10 Mph.

Tonight 12 Aug Central San Joaquin County Including Stockton Metro

Mostly clear. Lows 57 to 63. Northwest Winds up to 10 Mph with Gusts to around 20 Mph.

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Caswell Memorial State Park Temperature Statistics

August Temperature

Modesto City-County Airport - Harry Sham Field (13 miles)

  • Lowest 5 August, 2026

    63.6 °F

  • Average August

    84.1 °F

  • Highest 3 August, 2026

    104.6 °F

Climate (2021–2026)

Modesto City-County Airport - Harry Sham Field (13 miles)

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  • Average Low 2021–2026

    51.8 °F

  • Average 2021–2026

    63.8 °F

  • Average High 2021–2026

    76.3 °F
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