Lake Poway Weather Forecast

    • 65
    • 85

    Mostly Cloudy

    • 60
    • 82

    Partly Sunny

    • 66
    • 87

    Mostly Sunny

    • 67
    • 93

    Mostly Sunny

    • 67
    • 93

    Mostly Sunny

    • 67
    • 93

    Mostly Sunny

Today 27 Sep San Diego County Inland Valleys

Cloudy. Highs 84 to 89. Light Winds becoming southwest 10 Mph in the afternoon.

Tonight 27 Sep San Diego County Inland Valleys

Mostly cloudy with a slight chance of Showers. Lows 61 to 66. Light Winds. Chance of measurable precipitation 20 percent.

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Lake Poway Temperature Statistics

September Temperature

Ramona, Ramona Airport (5.6 miles)

  • Lowest 3 September, 2026

    50 °F

  • Average September

    72.7 °F

  • Highest 9 September, 2026

    104 °F

Climate (2021–2026)

Ramona, Ramona Airport (5.6 miles)

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  • Average Low 2021–2026

    51.7 °F

  • Average 2021–2026

    64.7 °F

  • Average High 2021–2026

    76.9 °F
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