Granite Hills Weather Forecast

    • 40
    • 60

    Partly Sunny

    • 36
    • 61

    Mostly Sunny

    • 40
    • 65

    Mostly Sunny

    • 44
    • 70

    Mostly Sunny

    • 46
    • 74

    Mostly Sunny

    • 45
    • 75

    Partly Sunny

    • 44
    • 67

    Partly Sunny

Today 29 Jan San Diego County Inland Valleys

Partly cloudy. A slight chance of Showers this morning. Highs 60 to 63 in the western Valleys to 54 to 59 near the Foothills. Light Winds becoming southwest 10 Mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight 29 Jan San Diego County Inland Valleys

Partly cloudy this evening. Becoming mostly cloudy. Colder. Lows 33 to 43 in wind Sheltered Areas to 40 to 46 in warmer Locations. Light Winds.

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Granite Hills Temperature Statistics

January Temperature

Gillespie Field Airport (4.3 miles)

  • Lowest 14 January, 2025

    30.2 °F

  • Average January

    48.8 °F

  • Highest 22 January, 2025

    82.4 °F

Climate (2020–Present)

Gillespie Field Airport (4.3 miles)

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  • Average Low 2020–2025

    53 °F

  • Average 2020–2025

    60.3 °F

  • Average High 2020–2025

    76 °F
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