Salt Spring Valley Reservoir Weather Forecast

    • 39
    • 51

    Decreasing Clouds

    • 41
    • 53

    Partly Sunny

    • 44
    • 54

    Mostly Sunny

    • 45
    • 57

    Mostly Sunny

    • 44
    • 58

    Partly Sunny

    • 46
    • 57

    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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Salt Spring Valley Reservoir Temperature Statistics

December Temperature

COLUMBIA (18 miles)

  • Lowest 1 December, 2025

    33.8 °F

  • Average December

    44.7 °F

  • Highest 1 December, 2025

    59 °F

Climate (2020–Present)

COLUMBIA (18 miles)

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  • Average Low 2020–2025

    46.8 °F

  • Average 2020–2025

    59.8 °F

  • Average High 2020–2025

    73.6 °F
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