San Carlos Weather Forecast

    • 50
    • 76

    Mostly Sunny

    • 51
    • 70

    Areas Fog

    • 53
    • 66

    Mostly Cloudy

    • 51
    • 64

    Chance Rain Showers

    • 46
    • 64

    Partly Sunny

    • 45
    • 68

    Partly Sunny

    • 46
    • 70

    Partly Sunny

Today 20 Jan San Diego County Inland Valleys

Mostly sunny. Highs 74 to 79. Areas of Winds east to 10 Mph in the morning becoming light.

Tonight 20 Jan San Diego County Inland Valleys

Partly cloudy overnight. Areas of fog overnight. Local visibility one quarter mile or less at Times overnight. Lows 41 to 51 in wind Sheltered Areas to 48 to 54 in warmer Locations. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Carlos Temperature Statistics

January Temperature

Gillespie Field Airport (4.3 miles)

  • Lowest 10 January, 2026

    35.6 °F

  • Average January

    53.3 °F

  • Highest 14 January, 2026

    82.4 °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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