South Spillway Weather Forecast

    • 48
    • 58

    Mostly Cloudy

    • 48
    • 60

    Cloudy

    • 45
    • 60

    Partly Sunny

    • 42
    • 59

    Mostly Sunny

    • 44
    • 59

    Partly Sunny

    • 45
    • 60

    Mostly Cloudy

Today 20 Jan Northern San Joaquin Valley

Mostly cloudy. Widespread fog. Locally dense until late afternoon. Haze through the day. Patchy fog late in the afternoon. Highs 53 to 59. Light Winds.

Tonight 20 Jan Northern San Joaquin Valley

Mostly cloudy. Patchy fog in the evening. Widespread fog after midnight. Lows around 46. Light Winds.

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South Spillway Temperature Statistics

January Temperature

Sacramento Mather Airport (31.7 miles)

  • Lowest 9 January, 2026

    30.2 °F

  • Average January

    49.9 °F

  • Highest 15 January, 2026

    66.2 °F

Climate (2021–Present)

Sacramento Mather Airport (31.7 miles)

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  • Average Low 2021–2026

    48.7 °F

  • Average 2021–2026

    61.7 °F

  • Average High 2021–2026

    75.3 °F
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