South Arm Weather Forecast

    • 45
    • 62

    Decreasing Clouds

    • 44
    • 61

    Mostly Sunny

    • 45
    • 63

    Partly Sunny

    • 46
    • 62

    Mostly Cloudy

    • 44
    • 61

    Partly Sunny

    • 44
    • 59

    Partly Sunny

    • 44
    • 59

    Partly Sunny

Today 18 Jan Northern San Joaquin Valley

Mostly cloudy. Widespread fog. Locally dense until late afternoon. Haze through the day. Patchy dense fog late in the afternoon. Highs 54 to 64. Light Winds.

Tonight 18 Jan Northern San Joaquin Valley

Partly cloudy in the evening then becoming mostly cloudy. Patchy dense fog in the evening. Haze through the night. Widespread fog. Locally dense after midnight. Lows 39 to 47. 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

    50 °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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