Lake Cuyamaca Weather Forecast

    • 65
    • 86

    Slight Chance Thunderstorms

    • 63
    • 79

    Chance Thunderstorms

    • 60
    • 75

    Rain Showers Likely

    • 58
    • 74

    Chance Thunderstorms

    • 59
    • 76

    Chance Thunderstorms

    • 61
    • 79

    Slight Chance Thunderstorms

Today 16 Sep San Diego County Mountains

Sunny this morning. Becoming partly cloudy. Highs 84 to 92. Areas of Winds east 10 Mph becoming west this afternoon.

Tonight 16 Sep San Diego County Mountains

Partly cloudy. Lows 63 to 71. Areas of Winds northeast 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Cuyamaca Temperature Statistics

September Temperature

Ramona, Ramona Airport (19.3 miles)

  • Lowest 9 September, 2025

    53.1 °F

  • Average September

    73.9 °F

  • Highest 2 September, 2025

    97 °F

Climate (2020–Present)

Ramona, Ramona Airport (19.3 miles)

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  • Average Low 2020–2025

    51.2 °F

  • Average 2020–2025

    64.1 °F

  • Average High 2020–2025

    76.6 °F
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