San Carlos Weather Forecast

    • 69
    • 91

    Mostly Sunny

    • 70
    • 93

    Mostly Sunny

    • 71
    • 93

    Mostly Sunny

    • 72
    • 94

    Mostly Sunny

    • 72
    • 95

    Partly Sunny

    • 72
    • 96

    Mostly Sunny

Today 22 Aug San Diego County Inland Valleys

Mostly sunny. Highs 89 to 94 in the western Valleys to 95 to 100 near the Foothills. Areas of Winds west to 10 Mph.

Tonight 22 Aug San Diego County Inland Valleys

Mostly clear. Lows 66 to 72. Areas of Winds west to 10 Mph in the evening becoming light.

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San Carlos Temperature Statistics

August Temperature

Gillespie Field Airport (4.3 miles)

  • Lowest 3 August, 2026

    66.2 °F

  • Average August

    73.9 °F

  • Highest 19 August, 2026

    95 °F

Climate (2021–2026)

Gillespie Field Airport (4.3 miles)

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  • Average Low 2021–2026

    53.5 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    76.3 °F
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