Serra Mesa Weather Forecast

    • 55
    • 76

    Mostly Sunny

    • 53
    • 74

    Partly Sunny

    • 54
    • 69

    Partly Sunny

    • 53
    • 71

    Patchy Fog

    • 53
    • 70

    Mostly Cloudy

    • 55
    • 68

    Chance Rain Showers

Today 18 Dec San Diego County Coastal Areas

Mostly sunny. Highs 70 to 74 near the coast to 76 to 79 inland. Light Winds.

Tonight 18 Dec San Diego County Coastal Areas

Mostly clear in the evening. Becoming partly cloudy. Lows 52 to 56. Light Winds.

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Serra Mesa Temperature Statistics

December Temperature

San Diego, Montgomery Field (0.6 miles)

  • Lowest 5 December, 2025

    45 °F

  • Average December

    59.1 °F

  • Highest 9 December, 2025

    81 °F

Climate (2020–Present)

San Diego, Montgomery Field (0.6 miles)

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  • Average Low 2020–2025

    55.8 °F

  • Average 2020–2025

    63.9 °F

  • Average High 2020–2025

    73 °F
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