San Joaquin River - West Island Weather Forecast

    • 61
    • 76

    Decreasing Clouds

    • 61
    • 78

    Mostly Sunny

    • 62
    • 79

    Mostly Sunny

    • 64
    • 88

    Mostly Sunny

    • 66
    • 91

    Mostly Sunny

    • 63
    • 85

    Mostly Sunny

Today 20 Sep Sacramento County Delta

Mostly cloudy in the morning then becoming partly cloudy. Highs 76 to 82. West Winds around 10 Mph.

Tonight 20 Sep Sacramento County Delta

Mostly cloudy in the evening then becoming partly cloudy. Lows 54 to 60. West Winds 10 to 15 Mph with Gusts to around 25 Mph.

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  • Temperature Real-Time

San Joaquin River - West Island Temperature Statistics

September Temperature

Concord, Buchanan Field (14.9 miles)

  • Lowest 7 September, 2026

    54.6 °F

  • Average September

    71.9 °F

  • Highest 9 September, 2026

    101.6 °F

Climate (2021–2026)

Concord, Buchanan Field (14.9 miles)

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  • Average Low 2021–2026

    51.1 °F

  • Average 2021–2026

    61.6 °F

  • Average High 2021–2026

    74.2 °F
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