Sweetwater Reservoir Weather Forecast

    • 53
    • 71

    Slight Chance Rain Showers

    • 53
    • 72

    Partly Sunny

    • 58
    • 80

    Mostly Sunny

    • 61
    • 95

    Sunny

    • 60
    • 94

    Mostly Sunny

    • 57
    • 85

    Mostly Sunny

Today 9 Mar San Diego County Coastal Areas

Partly cloudy. A slight chance of Showers in the afternoon. Cooler. Highs 66 to 70 near the coast to 71 inland. Light Winds becoming west 10 Mph in the afternoon. Chance of measurable precipitation 20 percent.

Tonight 9 Mar San Diego County Coastal Areas

Partly cloudy. Lows 48 to 53. Areas of Winds southwest to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sweetwater Reservoir Temperature Statistics

March Temperature

San Diego, Brown Field Municipal Airport (8.1 miles)

  • Lowest 6 March, 2026

    46.9 °F

  • Average March

    60.4 °F

  • Highest 1 March, 2026

    84 °F

Climate (2021–Present)

San Diego, Brown Field Municipal Airport (8.1 miles)

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  • Average Low 2021–2026

    54.2 °F

  • Average 2021–2026

    63.6 °F

  • Average High 2021–2026

    74 °F
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