Jack London Park Weather Forecast

    • 61
    • 78

    Chance Rain Showers

    • 59
    • 77

    Slight Chance Rain Showers

    • 59
    • 80

    Mostly Sunny

    • 60
    • 82

    Mostly Sunny

    • 62
    • 91

    Mostly Sunny

    • 61
    • 82

    Slight Chance Rain Showers

    • 60
    • 78

    Mostly Sunny

Today 18 Sep Carquinez Strait and Delta

Mostly cloudy. Highs 82 to 88. Southwest Winds 10 to 15 Mph.

Tonight 18 Sep Carquinez Strait and Delta

Mostly cloudy. A slight chance of rain Showers in the Evening, then a chance of rain Showers after midnight. Lows 60 to 66. West Winds up to 15 Mph with Gusts to around 25 Mph.

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Jack London Park Temperature Statistics

September Temperature

Concord, Buchanan Field (8.7 miles)

  • Lowest 4 September, 2025

    59 °F

  • Average September

    70.7 °F

  • Highest 1 September, 2025

    99 °F

Climate (2020–Present)

Concord, Buchanan Field (8.7 miles)

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  • Average Low 2020–2025

    50.8 °F

  • Average 2020–2025

    61.4 °F

  • Average High 2020–2025

    74.6 °F
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