San Carlos Weather Forecast

    • 57
    • 78

    Patchy Fog

    • 59
    • 79

    Mostly Sunny

    • 58
    • 82

    Mostly Sunny

    • 57
    • 78

    Partly Sunny

    • 57
    • 78

    Mostly Sunny

    • 57
    • 78

    Partly Sunny

Today 9 May San Diego County Inland Valleys

Partly cloudy this morning. Becoming mostly sunny. Highs 77 to 81 in the western Valleys to 81 to 86 near the Foothills. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph this afternoon.

Tonight 9 May San Diego County Inland Valleys

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 54 to 59. Areas of Winds southwest to 10 Mph in the evening becoming light.

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San Carlos Temperature Statistics

May Temperature

Gillespie Field Airport (4.3 miles)

  • Lowest 6 May, 2026

    51.8 °F

  • Average May

    61.1 °F

  • Highest 1 May, 2026

    77 °F

Climate (2021–Present)

Gillespie Field Airport (4.3 miles)

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  • Average Low 2021–2026

    53.4 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    76.2 °F
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