Walnut Creek Weather Forecast

    • 58
    • 79

    Increasing Clouds

    • 56
    • 77

    Chance Rain

    • 56
    • 80

    Mostly Sunny

    • 58
    • 84

    Mostly Sunny

    • 58
    • 82

    Mostly Sunny

    • 61
    • 89

    Mostly Sunny

    • 62
    • 92

    Partly Sunny

Today 2 Sep East Bay Interior Valleys

Sunny. Highs around 80. West Winds 10 to 20 Mph.

Tonight 2 Sep East Bay Interior Valleys

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

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Walnut Creek Temperature Statistics

September Temperature

Concord, Buchanan Field (5.6 miles)

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  • Average September

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Climate (2021–2026)

Concord, Buchanan Field (5.6 miles)

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  • Average Low 2021–2026

    51 °F

  • Average 2021–2026

    61.6 °F

  • Average High 2021–2026

    74.3 °F
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