Sweetwater Dam Weather Forecast

    • 50
    • 75

    Increasing Clouds

    • 52
    • 70

    Areas Fog

    • 53
    • 66

    Mostly Cloudy

    • 51
    • 64

    Slight Chance Rain Showers

    • 46
    • 64

    Partly Sunny

    • 46
    • 68

    Partly Sunny

    • 46
    • 70

    Partly Sunny

Today 20 Jan San Diego County Coastal Areas

Patchy fog in the morning. Partly cloudy. Local visibility one quarter mile or less at Times in the morning. Highs around 70 near the coast to 73 to 76 inland. Light Winds.

Tonight 20 Jan San Diego County Coastal Areas

Partly cloudy. Patchy fog overnight. Lows 47 to 51. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sweetwater Dam Temperature Statistics

January Temperature

San Diego, Brown Field Municipal Airport (8.1 miles)

  • Lowest 10 January, 2026

    37 °F

  • Average January

    59 °F

  • Highest 17 January, 2026

    80.1 °F

Climate (2021–Present)

San Diego, Brown Field Municipal Airport (8.1 miles)

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  • Average Low 2021–2026

    54.1 °F

  • Average 2021–2026

    63.4 °F

  • Average High 2021–2026

    73.8 °F
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