Norco Weather Forecast

    • 66
    • 95

    Sunny

    • 67
    • 93

    Mostly Sunny

    • 68
    • 94

    Partly Sunny

    • 66
    • 92

    Partly Sunny

    • 63
    • 87

    Partly Sunny

    • 62
    • 83

    Mostly Sunny

Today 23 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Warmer. Highs 93 to 98. Light Winds becoming west 10 to 15 Mph with Gusts to 25 Mph in the afternoon.

Tonight 23 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 63 to 68. Areas of Winds west to 10 Mph becoming east overnight.

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Norco Temperature Statistics

September Temperature

Corona Airport (3.7 miles)

  • Lowest 2 September, 2026

    53.1 °F

  • Average September

    74 °F

  • Highest 9 September, 2026

    109 °F

Climate (2021–2026)

Corona Airport (3.7 miles)

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  • Average Low 2021–2026

    52.4 °F

  • Average 2021–2026

    65.1 °F

  • Average High 2021–2026

    78.4 °F
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