Walnut Creek Weather Forecast

    • 54
    • 70

    Mostly Cloudy

    • 54
    • 72

    Chance Rain Showers

    • 51
    • 70

    Chance Rain Showers

    • 49
    • 76

    Mostly Sunny

    • 51
    • 76

    Mostly Sunny

    • 52
    • 77

    Mostly Sunny

Today 20 Oct East Bay Interior Valleys

Mostly cloudy. Highs in the lower 70s. North Winds up to 5 Mph.

Tonight 20 Oct East Bay Interior Valleys

Mostly cloudy. Lows in the mid 50s. Light Winds. Becoming west up to 5 Mph after midnight.

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Walnut Creek Temperature Statistics

October Temperature

Concord, Buchanan Field (5.6 miles)

  • Lowest 13 October, 2026

    46.7 °F

  • Average October

    71.5 °F

  • Highest 6 October, 2026

    99.6 °F

Climate (2021–2026)

Concord, Buchanan Field (5.6 miles)

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  • Average Low 2021–2026

    51.1 °F

  • Average 2021–2026

    61.7 °F

  • Average High 2021–2026

    74.3 °F
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