Martinez Reservoir Weather Forecast

    • 49
    • 67

    Mostly Sunny

    • 46
    • 66

    Mostly Sunny

    • 49
    • 69

    Mostly Sunny

    • 47
    • 65

    Partly Sunny

    • 47
    • 63

    Partly Sunny

    • 46
    • 61

    Chance Rain

    • 47
    • 64

    Mostly Sunny

Today 26 Oct East Bay Interior Valleys

Sunny. Highs in the upper 60s. West Winds 10 to 15 Mph.

Tonight 26 Oct East Bay Interior Valleys

Mostly clear. Lows in the upper 40s. Southwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Martinez Reservoir Temperature Statistics

October Temperature

Concord, Buchanan Field (3.1 miles)

  • Lowest 13 October, 2026

    46.7 °F

  • Average October

    69 °F

  • Highest 6 October, 2026

    99.6 °F

Climate (2021–2026)

Concord, Buchanan Field (3.1 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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