San Antonio Park Weather Forecast

    • 67
    • 83

    Sunny

    • 70
    • 86

    Mostly Sunny

    • 71
    • 88

    Mostly Sunny

    • 71
    • 85

    Partly Sunny

    • 69
    • 82

    Chance Rain Showers

    • 68
    • 81

    Chance Rain Showers

    • 65
    • 80

    Slight Chance Thunderstorms

Today 14 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy with patchy fog this morning. Becoming sunny. Warmer. Highs 88 to 93. Light Winds becoming west 10 to 15 Mph this afternoon.

Tonight 14 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 59 to 64. Areas of Winds west to 10 Mph this evening becoming light.

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San Antonio Park Temperature Statistics

September Temperature

Brackett Field Airport (6.8 miles)

  • Lowest 9 September, 2025

    59 °F

  • Average September

    82.2 °F

  • Highest 2 September, 2025

    102.2 °F

Climate (2020–Present)

Brackett Field Airport (6.8 miles)

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  • Average Low 2020–2025

    55.6 °F

  • Average 2020–2025

    67.8 °F

  • Average High 2020–2025

    75.7 °F
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