Carmel Valley Weather Forecast

    • 65
    • 75

    Mostly Cloudy

    • 63
    • 74

    Mostly Cloudy

    • 64
    • 75

    Partly Sunny

    • 65
    • 79

    Mostly Sunny

    • 67
    • 81

    Partly Sunny

    • 68
    • 83

    Partly Sunny

Today 20 Sep San Diego County Coastal Areas

Mostly cloudy in the morning. Becoming partly cloudy. Highs 73 to 77. Light Winds becoming southwest 10 Mph in the afternoon.

Tonight 20 Sep San Diego County Coastal Areas

Mostly cloudy. Lows 62 to 66. Light Winds.

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Carmel Valley Temperature Statistics

September Temperature

San Diego, Miramar MCAS/Mitscher Field Airport (5.6 miles)

  • Lowest 3 September, 2026

    57 °F

  • Average September

    75 °F

  • Highest 9 September, 2026

    104 °F

Climate (2021–2026)

San Diego, Miramar MCAS/Mitscher Field Airport (5.6 miles)

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  • Average Low 2021–2026

    53 °F

  • Average 2021–2026

    62.1 °F

  • Average High 2021–2026

    72.5 °F
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