Modesto Reservoir Weather Forecast

    • 56
    • 77

    Becoming Sunny

    • 57
    • 82

    Mostly Sunny

    • 57
    • 81

    Sunny

    • 60
    • 85

    Mostly Sunny

    • 62
    • 88

    Partly Sunny

    • 63
    • 87

    Partly Sunny

Today 4 Sep Central Stanislaus County Including Modesto Metro

Partly cloudy in the morning then clearing. Highs around 77. Northwest Winds up to 10 Mph.

Tonight 4 Sep Central Stanislaus County Including Modesto Metro

Clear. Lows around 56. Northwest Winds around 10 Mph with Gusts to around 20 Mph.

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Modesto Reservoir Temperature Statistics

September Temperature

Modesto City-County Airport - Harry Sham Field (16.2 miles)

  • Lowest 1 September, 2026

    55 °F

  • Average September

    66.2 °F

  • Highest 1 September, 2026

    77 °F

Climate (2021–2026)

Modesto City-County Airport - Harry Sham Field (16.2 miles)

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  • Average Low 2021–2026

    51.8 °F

  • Average 2021–2026

    63.8 °F

  • Average High 2021–2026

    76.3 °F
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