Serra Mesa Weather Forecast

    • 66
    • 81

    Increasing Clouds

    • 68
    • 85

    Mostly Sunny

    • 74
    • 92

    Mostly Sunny

    • 77
    • 95

    Mostly Sunny

    • 76
    • 94

    Mostly Sunny

    • 75
    • 92

    Mostly Sunny

    • 74
    • 91

    Mostly Sunny

Today 30 Sep San Diego County Coastal Areas

Partly cloudy in the morning. Becoming mostly sunny. Highs 84 to 89 near the coast to 93 to 96 inland.

Tonight 30 Sep San Diego County Coastal Areas

Partly cloudy. Lows 62 to 66. Light Winds.

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Serra Mesa Temperature Statistics

September Temperature

San Diego, Montgomery Field (0.6 miles)

  • Lowest 3 September, 2026

    59.6 °F

  • Average September

    76.3 °F

  • Highest 9 September, 2026

    103.6 °F

Climate (2021–2026)

San Diego, Montgomery Field (0.6 miles)

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  • Average Low 2021–2026

    56.3 °F

  • Average 2021–2026

    64.6 °F

  • Average High 2021–2026

    73.6 °F
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