Barton Weather Forecast

    • 69
    • 88

    Chance Rain Showers

    • 72
    • 91

    Mostly Sunny

    • 73
    • 96

    Mostly Sunny

    • 72
    • 96

    Mostly Sunny

    • 66
    • 92

    Sunny

    • 63
    • 88

    Sunny

Today 7 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy this morning. Becoming mostly sunny. A slight chance of Showers and Thunderstorms. Warmer. Highs 88 to 94. Light Winds becoming northwest 10 Mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight 7 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear in the evening. Becoming partly cloudy. Lows 67 to 71. Areas of Winds northwest to 10 Mph in the evening becoming light.

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Barton Temperature Statistics

September Temperature

San Bernardino Intl. Airport (3.1 miles)

  • Lowest 2 September, 2026

    59 °F

  • Average September

    71.7 °F

  • Highest 5 September, 2026

    95 °F

Climate (2021–2026)

San Bernardino Intl. Airport (3.1 miles)

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  • Average Low 2021–2026

    54.2 °F

  • Average 2021–2026

    63.2 °F

  • Average High 2021–2026

    80.4 °F
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