San Carlos Weather Forecast

    • 52
    • 66

    Chance Rain Showers

    • 51
    • 63

    Chance Rain Showers

    • 46
    • 65

    Mostly Sunny

    • 47
    • 67

    Mostly Sunny

    • 49
    • 70

    Mostly Sunny

    • 49
    • 74

    Mostly Sunny

Today 6 Jan San Diego County Inland Valleys

Mostly cloudy this morning. Becoming partly cloudy. Highs around 65 in the western Valleys to 58 to 63 near the Foothills. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 6 Jan San Diego County Inland Valleys

Partly cloudy with a slight chance of Showers in the Evening, then mostly cloudy with a chance of Showers overnight. Lows 46 to 51. Light Winds. Chance of measurable precipitation 40 percent.

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San Carlos Temperature Statistics

January Temperature

Gillespie Field Airport (4.3 miles)

  • Lowest 4 January, 2026

    57.2 °F

  • Average January

    60.9 °F

  • Highest 2 January, 2026

    71.6 °F

Climate (2021–Present)

Gillespie Field Airport (4.3 miles)

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  • Average Low 2021–2026

    53.2 °F

  • Average 2021–2026

    60.2 °F

  • Average High 2021–2026

    75.8 °F
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