Modesto Reservoir Weather Forecast

    • 55
    • 85

    Mostly Sunny

    • 57
    • 81

    Mostly Sunny

    • 59
    • 86

    Sunny

    • 61
    • 89

    Mostly Sunny

    • 59
    • 88

    Partly Sunny

    • 61
    • 88

    Mostly Sunny

Today 16 Sep Central Stanislaus County Including Modesto Metro

Sunny. Highs around 84. Light Winds becoming southwest up to 10 Mph in the afternoon.

Tonight 16 Sep Central Stanislaus County Including Modesto Metro

Clear. Lows around 55. Northwest Winds up to 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

    54.6 °F

  • Average September

    75.8 °F

  • Highest 10 September, 2026

    105.7 °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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