Modesto Reservoir Weather Forecast

    • 62
    • 91

    Sunny

    • 65
    • 96

    Sunny

    • 67
    • 96

    Partly Sunny

    • 65
    • 89

    Chance Rain Showers

    • 64
    • 88

    Chance Rain Showers

    • 63
    • 87

    Slight Chance Rain Showers

Today 15 Sep Northern San Joaquin Valley

Sunny. Highs 88 to 94. Northwest Winds up to 10 Mph.

Tonight 15 Sep Northern San Joaquin Valley

Clear. Lows 60 to 70. Light Winds.

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  • Temperature Real-Time

Modesto Reservoir Temperature Statistics

September Temperature

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

  • Lowest 5 September, 2025

    61 °F

  • Average September

    74.9 °F

  • Highest 2 September, 2025

    102 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    51.2 °F

  • Average 2020–2025

    63.3 °F

  • Average High 2020–2025

    76.1 °F
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