South Spillway Weather Forecast

    • 40
    • 56

    Becoming Sunny

    • 42
    • 56

    Partly Sunny

    • 45
    • 58

    Mostly Sunny

    • 47
    • 60

    Partly Sunny

    • 46
    • 60

    Partly Sunny

    • 46
    • 60

    Partly Sunny

Today 3 Dec Northern San Joaquin Valley

Widespread fog. Locally dense early in the morning. Areas of fog late in the morning. Mostly cloudy. Highs 50 to 58. Northwest Winds up to 10 Mph with Gusts to around 20 Mph.

Tonight 3 Dec Northern San Joaquin Valley

Mostly clear. Patchy fog after midnight. Lows around 39. Light Winds.

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South Spillway Temperature Statistics

December Temperature

Sacramento Mather Airport (31.7 miles)

  • Lowest 1 December, 2025

    39.2 °F

  • Average December

    46.9 °F

  • Highest 1 December, 2025

    53.6 °F

Climate (2020–Present)

Sacramento Mather Airport (31.7 miles)

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  • Average Low 2020–2025

    48.6 °F

  • Average 2020–2025

    61.6 °F

  • Average High 2020–2025

    75.4 °F
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