Highgrove Weather Forecast

    • 61
    • 84

    Becoming Sunny

    • 61
    • 84

    Partly Sunny

    • 63
    • 87

    Sunny

    • 64
    • 90

    Mostly Sunny

    • 62
    • 88

    Mostly Sunny

    • 62
    • 86

    Mostly Sunny

Today 16 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Mostly cloudy in the morning. Becoming mostly sunny. Highs 81 to 86. Light Winds becoming southwest 10 Mph in the afternoon.

Tonight 16 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear in the evening. Becoming partly cloudy. Lows 52 to 60. Areas of Winds southwest 10 Mph in the evening becoming light.

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Highgrove Temperature Statistics

September Temperature

San Bernardino Intl. Airport (6.8 miles)

  • Lowest 2 September, 2026

    59 °F

  • Average September

    76.9 °F

  • Highest 9 September, 2026

    105.8 °F

Climate (2021–2026)

San Bernardino Intl. Airport (6.8 miles)

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  • Average Low 2021–2026

    54.2 °F

  • Average 2021–2026

    63.2 °F

  • Average High 2021–2026

    80.3 °F
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