Lake Poway Weather Forecast

    • 64
    • 91

    Patchy Fog

    • 62
    • 88

    Becoming Sunny

    • 60
    • 86

    Mostly Sunny

    • 58
    • 84

    Mostly Sunny

    • 59
    • 84

    Mostly Sunny

    • 60
    • 87

    Mostly Sunny

    • 64
    • 91

    Mostly Sunny

Today 12 Sep San Diego County Inland Valleys

Patchy fog this morning. Mostly sunny. Highs 86 to 90 in the western Valleys to 89 to 94 near the Foothills. Areas of Winds west to 10 Mph.

Tonight 12 Sep San Diego County Inland Valleys

Partly cloudy. Patchy fog overnight. Lows 61 to 66. Areas of Winds west to 10 Mph this evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Poway Temperature Statistics

September Temperature

Ramona, Ramona Airport (5.6 miles)

  • Lowest 3 September, 2026

    50 °F

  • Average September

    77.4 °F

  • Highest 9 September, 2026

    104 °F

Climate (2021–2026)

Ramona, Ramona Airport (5.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    51.7 °F

  • Average 2021–2026

    64.7 °F

  • Average High 2021–2026

    76.9 °F
Get WillyWeather+ to remove ads