Lake Cuyamaca Weather Forecast

    • 45
    • 68

    Mostly Sunny

    • 43
    • 60

    Chance Rain

    • 41
    • 52

    Chance Rain

    • 41
    • 54

    Mostly Sunny

    • 49
    • 63

    Sunny

    • 56
    • 70

    Sunny

Today 25 May San Diego County Mountains

Partly cloudy this morning. Becoming mostly sunny. Highs 69 to 79. Areas of Winds west 10 to 15 Mph with Gusts to 25 Mph. Becoming 15 to 25 Mph with Gusts to 35 Mph this afternoon.

Tonight 25 May San Diego County Mountains

Partly cloudy. A slight chance of rain overnight. Patchy fog overnight. Lows 41 to 48. Areas of Winds west 15 to 25 Mph with Gusts to 40 Mph. Chance of measurable precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Cuyamaca Temperature Statistics

May Temperature

Ramona, Ramona Airport (19.3 miles)

  • Lowest 6 May, 2026

    39.9 °F

  • Average May

    62.7 °F

  • Highest 11 May, 2026

    90 °F

Climate (2021–Present)

Ramona, Ramona Airport (19.3 miles)

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  • Average Low 2021–2026

    51.6 °F

  • Average 2021–2026

    64.6 °F

  • Average High 2021–2026

    76.9 °F
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