North Heritage Park Weather Forecast

    • 60
    • 82

    Mostly Sunny

    • 63
    • 89

    Mostly Sunny

    • 65
    • 90

    Sunny

    • 68
    • 95

    Sunny

    • 70
    • 97

    Hot

    • 70
    • 97

    Hot

Today 28 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Sunny, hot. Highs 94 to 101.

Tonight 28 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Cooler. Lows 52 to 60. Areas of Winds west to 10 Mph becoming southeast overnight.

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North Heritage Park Temperature Statistics

September Temperature

Ontario International Airport (6.2 miles)

  • Lowest 19 September, 2026

    61.6 °F

  • Average September

    79.1 °F

  • Highest 9 September, 2026

    109.7 °F

Climate (2021–2026)

Ontario International Airport (6.2 miles)

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  • Average Low 2021–2026

    55.8 °F

  • Average 2021–2026

    67.2 °F

  • Average High 2021–2026

    79.3 °F
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