San Antonio Heights Weather Forecast

    • 61
    • 81

    Sunny

    • 64
    • 83

    Mostly Sunny

    • 68
    • 87

    Sunny

    • 74
    • 91

    Mostly Sunny

    • 74
    • 92

    Sunny

    • 73
    • 91

    Sunny

    • 72
    • 89

    Sunny

Today 29 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Sunny, hot. Highs 94 to 100.

Tonight 29 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 55 to 61. Areas of Winds south 10 to 15 Mph with Gusts to 25 Mph becoming southeast overnight.

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San Antonio Heights Temperature Statistics

September Temperature

Brackett Field Airport (8.1 miles)

  • Lowest 2 September, 2026

    60.8 °F

  • Average September

    78.1 °F

  • Highest 9 September, 2026

    105.8 °F

Climate (2021–2026)

Brackett Field Airport (8.1 miles)

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  • Average Low 2021–2026

    56.1 °F

  • Average 2021–2026

    68.1 °F

  • Average High 2021–2026

    76 °F
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