Serra Mesa Weather Forecast

    • 52
    • 69

    Patchy Fog

    • 55
    • 68

    Mostly Cloudy

    • 58
    • 66

    Rain Showers

    • 58
    • 66

    Rain Showers

    • 55
    • 66

    Rain Showers Likely

    • 53
    • 65

    Rain Showers Likely

Today 21 Dec San Diego County Coastal Areas

Mostly cloudy this morning. Becoming partly cloudy. Patchy fog this morning. Highs 64 to 68 near the coast to 68 to 72 inland. Light Winds becoming northwest 10 Mph this afternoon.

Tonight 21 Dec San Diego County Coastal Areas

Mostly cloudy. Patchy fog overnight. Lows 47 to 53. Areas of Winds northwest 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

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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

    58.9 °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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