South Arm Weather Forecast

    • 48
    • 58

    Dense Fog

    • 44
    • 60

    Partly Sunny

    • 40
    • 57

    Partly Sunny

    • 39
    • 59

    Mostly Sunny

    • 42
    • 57

    Mostly Cloudy

    • 41
    • 58

    Partly Sunny

    • 44
    • 59

    Partly Sunny

Today 21 Jan Northern San Joaquin Valley

Widespread fog. Locally dense in the morning. Areas of fog early in the afternoon. Mostly cloudy. Highs 53 to 59. Light Winds.

Tonight 21 Jan Northern San Joaquin Valley

Mostly cloudy. Patchy fog until early morning. Widespread fog. Locally dense late in the night. Lows around 46. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Arm Temperature Statistics

January Temperature

Sacramento Mather Airport (31.7 miles)

  • Lowest 9 January, 2026

    30.2 °F

  • Average January

    49.5 °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

    61.6 °F

  • Average High 2021–2026

    75.3 °F
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