Serra Mesa Weather Forecast

    • 69
    • 84

    Rain Showers Likely

    • 69
    • 80

    Rain Showers Likely

    • 67
    • 79

    Slight Chance Thunderstorms

    • 68
    • 80

    Mostly Cloudy

    • 69
    • 82

    Mostly Cloudy

    • 69
    • 83

    Partly Sunny

Today 17 Sep San Diego County Coastal Areas

Mostly cloudy in the Morning, then partly cloudy with a slight chance of Showers and Thunderstorms in the afternoon. Highs 78 to 82 near the coast to 82 to 87 inland. Light Winds becoming west 10 Mph in the afternoon. Chance of measurable precipitation 20 percent.

Tonight 17 Sep San Diego County Coastal Areas

Mostly cloudy with a slight chance of Thunderstorms. A chance of Showers. Lows 65 to 70. Light Winds. Chance of measurable precipitation 50 percent.

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Serra Mesa Temperature Statistics

September Temperature

San Diego, Montgomery Field (0.6 miles)

  • Lowest 6 September, 2025

    64.9 °F

  • Average September

    71.6 °F

  • Highest 7 September, 2025

    88 °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

    73.2 °F
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