San Carlos Weather Forecast

    • 74
    • 103

    Hot

    • 73
    • 102

    Hot

    • 77
    • 99

    Hot

    • 76
    • 98

    Hot

    • 73
    • 95

    Hot

    • 72
    • 94

    Mostly Sunny

    • 69
    • 90

    Mostly Sunny

Today 3 Oct San Diego County Inland Valleys

Partly cloudy. Highs 83 to 88.

Tonight 3 Oct San Diego County Inland Valleys

Mostly clear. Lows 69 to 74. Areas of Winds east 10 to 20 Mph. Gusts to 30 Mph. Becoming 25 Mph overnight.

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San Carlos Temperature Statistics

October Temperature

Gillespie Field Airport (4.3 miles)

  • Lowest 1 October, 2026

    60.8 °F

  • Average October

    70.8 °F

  • Highest 1 October, 2026

    93.2 °F

Climate (2021–2026)

Gillespie Field Airport (4.3 miles)

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  • Average Low 2021–2026

    53.6 °F

  • Average 2021–2026

    60.7 °F

  • Average High 2021–2026

    76.3 °F
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