San Joaquin River - Fern Island Weather Forecast

    • 59
    • 90

    Mostly Sunny

    • 59
    • 91

    Mostly Sunny

    • 55
    • 84

    Mostly Sunny

    • 53
    • 83

    Partly Sunny

    • 53
    • 78

    Mostly Sunny

    • 54
    • 84

    Sunny

Today 23 Sep San Joaquin County Delta

Sunny. Highs 86 to 91. Light Winds.

Tonight 23 Sep San Joaquin County Delta

Clear. Lows around 59. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Joaquin River - Fern Island Temperature Statistics

September Temperature

Stockton, Stockton Metropolitan Airport (17.4 miles)

  • Lowest 1 September, 2026

    52.6 °F

  • Average September

    72.8 °F

  • Highest 10 September, 2026

    106.6 °F

Climate (2021–2026)

Stockton, Stockton Metropolitan Airport (17.4 miles)

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  • Average Low 2021–2026

    50.3 °F

  • Average 2021–2026

    63.1 °F

  • Average High 2021–2026

    77.4 °F
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