Lake Poway Weather Forecast

    • 56
    • 81

    Mostly Sunny

    • 51
    • 77

    Mostly Sunny

    • 52
    • 73

    Partly Sunny

    • 51
    • 74

    Partly Sunny

    • 51
    • 73

    Mostly Sunny

    • 55
    • 69

    Rain Showers Likely

    • 54
    • 67

    Rain Showers

Today 18 Dec San Diego County Inland Valleys

Mostly sunny. Warmer. Highs 81 to 86. Areas of Winds northeast to 10 Mph becoming west 10 Mph this afternoon.

Tonight 18 Dec San Diego County Inland Valleys

Partly cloudy. Patchy fog overnight. Local visibility one quarter mile or less at Times overnight. Lows 47 to 55 in wind Sheltered Areas to 52 to 59 in warmer Locations. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Poway Temperature Statistics

December Temperature

Ramona, Ramona Airport (5.6 miles)

  • Lowest 1 December, 2025

    44.1 °F

  • Average December

    67 °F

  • Highest 10 December, 2025

    87.1 °F

Climate (2020–Present)

Ramona, Ramona Airport (5.6 miles)

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  • Average Low 2020–2025

    51.1 °F

  • Average 2020–2025

    64 °F

  • Average High 2020–2025

    76.5 °F
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