Walnut Creek Weather Forecast

    • 47
    • 58

    Cloudy

    • 47
    • 62

    Mostly Cloudy

    • 43
    • 60

    Partly Sunny

    • 40
    • 61

    Partly Sunny

    • 41
    • 58

    Mostly Cloudy

    • 40
    • 60

    Mostly Cloudy

Today 21 Jan East Bay Interior Valleys

Cloudy. Areas of fog in the morning. Highs in the upper 50s. Light Winds. Becoming north around 5 Mph in the afternoon.

Tonight 21 Jan East Bay Interior Valleys

Mostly cloudy. Lows in the mid 40s. Light Winds.

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Walnut Creek Temperature Statistics

January Temperature

Concord, Buchanan Field (5.6 miles)

  • Lowest 10 January, 2026

    34 °F

  • Average January

    49.5 °F

  • Highest 15 January, 2026

    66.9 °F

Climate (2021–Present)

Concord, Buchanan Field (5.6 miles)

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  • Average Low 2021–2026

    50.9 °F

  • Average 2021–2026

    61.2 °F

  • Average High 2021–2026

    74.2 °F
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