San Carlos Weather Forecast

    • 57
    • 73

    Increasing Clouds

    • 57
    • 73

    Cloudy

    • 56
    • 71

    Mostly Cloudy

    • 56
    • 69

    Mostly Cloudy

    • 55
    • 67

    Mostly Cloudy

    • 56
    • 70

    Mostly Cloudy

Today 23 May San Diego County Inland Valleys

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 71 to 75 in the western Valleys to 74 to 79 near the Foothills. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph this afternoon.

Tonight 23 May San Diego County Inland Valleys

Mostly cloudy. Patchy fog overnight. Lows 50 to 55. Areas of Winds west to 10 Mph in the evening becoming light.

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  • Temperature Real-Time

San Carlos Temperature Statistics

May Temperature

Gillespie Field Airport (4.3 miles)

  • Lowest 6 May, 2026

    51.8 °F

  • Average May

    62.7 °F

  • Highest 11 May, 2026

    86 °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

    76.3 °F
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