Granite Hills Weather Forecast

    • 57
    • 83

    Increasing Clouds

    • 57
    • 78

    Mostly Cloudy

    • 53
    • 70

    Rain Showers

    • 53
    • 72

    Mostly Sunny

    • 55
    • 79

    Mostly Sunny

    • 57
    • 82

    Partly Sunny

Today 20 Oct San Diego County Inland Valleys

Partly cloudy with patchy fog in the morning. Becoming mostly sunny. Local visibility one quarter mile or less at Times in the morning. Highs 79 to 84. Light Winds becoming southwest 10 Mph in the afternoon.

Tonight 20 Oct San Diego County Inland Valleys

Partly cloudy in the evening. Becoming mostly cloudy overnight with patchy fog. Lows 55 to 60. Light Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Granite Hills Temperature Statistics

October Temperature

Gillespie Field Airport (4.3 miles)

  • Lowest 14 October, 2026

    50 °F

  • Average October

    73.1 °F

  • Highest 3 October, 2026

    105.8 °F

Climate (2021–2026)

Gillespie Field Airport (4.3 miles)

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

  • Average Low 2021–2026

    53.7 °F

  • Average 2021–2026

    60.8 °F

  • Average High 2021–2026

    76.5 °F
Get WillyWeather+ to remove ads