Modesto Reservoir Weather Forecast

    • 66
    • 98

    Hot

    • 62
    • 93

    Sunny

    • 56
    • 86

    Sunny

    • 57
    • 82

    Mostly Sunny

    • 58
    • 86

    Sunny

    • 57
    • 86

    Sunny

Today 10 Sep Central Stanislaus County Including Modesto Metro

Mostly sunny. Highs around 98. Northwest Winds up to 15 Mph. Gusts up to 25 Mph in the afternoon.

Tonight 10 Sep Central Stanislaus County Including Modesto Metro

Mostly clear. Lows around 65. Northwest Winds up to 10 Mph. Gusts up to 25 Mph in the evening.

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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

    71.5 °F

  • Highest 7 September, 2026

    89.1 °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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