Northgate Weather Forecast

    • 62
    • 88

    Sunny

    • 63
    • 90

    Mostly Sunny

    • 67
    • 94

    Sunny

    • 73
    • 99

    Hot

    • 73
    • 99

    Hot

    • 72
    • 98

    Hot

    • 71
    • 97

    Hot

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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Northgate Temperature Statistics

September Temperature

Ontario International Airport (8.1 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 (8.1 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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