San Antonio Heights Weather Forecast

    • 57
    • 70

    Mostly Sunny

    • 57
    • 68

    Partly Sunny

    • 57
    • 67

    Mostly Cloudy

    • 55
    • 67

    Mostly Sunny

    • 55
    • 64

    Rain Showers

    • 55
    • 58

    Rain Showers

    • 53
    • 57

    Rain Showers Likely

Today 19 Dec San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Highs 76 to 80. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 19 Dec San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear this evening. Becoming partly cloudy. Colder. Lows 43 to 48 in wind Sheltered Areas to 48 to 55 in warmer Locations. Light Winds.

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San Antonio Heights Temperature Statistics

December Temperature

Brackett Field Airport (8.1 miles)

  • Lowest 5 December, 2025

    42.8 °F

  • Average December

    63.9 °F

  • Highest 10 December, 2025

    86 °F

Climate (2020–Present)

Brackett Field Airport (8.1 miles)

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  • Average Low 2020–2025

    55.5 °F

  • Average 2020–2025

    67.6 °F

  • Average High 2020–2025

    75.6 °F
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