Antioch Weather Forecast

    • 60
    • 88

    Mostly Sunny

    • 60
    • 87

    Mostly Sunny

    • 60
    • 82

    Mostly Sunny

    • 60
    • 84

    Mostly Sunny

    • 60
    • 87

    Sunny

    • 60
    • 85

    Mostly Sunny

Today 14 Sep East Bay Interior Valleys

Sunny. Patchy smoke in the morning. Highs in the upper 80s. West Winds 5 to 15 Mph.

Tonight 14 Sep East Bay Interior Valleys

Mostly clear. Lows in the mid 50s. Southwest Winds 5 to 10 Mph.

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Antioch Temperature Statistics

September Temperature

Concord, Buchanan Field (13 miles)

  • Lowest 7 September, 2026

    54.6 °F

  • Average September

    72.8 °F

  • Highest 9 September, 2026

    101.6 °F

Climate (2021–2026)

Concord, Buchanan Field (13 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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