Sleepy Hollow Weather Forecast

    • 59
    • 85

    Sunny

    • 59
    • 84

    Mostly Sunny

    • 63
    • 89

    Mostly Sunny

    • 69
    • 95

    Mostly Sunny

    • 71
    • 97

    Hot

    • 71
    • 97

    Hot

    • 70
    • 95

    Sunny

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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Sleepy Hollow Temperature Statistics

September Temperature

Chino, Chino Airport (8.7 miles)

  • Lowest 2 September, 2026

    55.7 °F

  • Average September

    78.3 °F

  • Highest 9 September, 2026

    111.7 °F

Climate (2021–2026)

Chino, Chino Airport (8.7 miles)

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  • Average Low 2021–2026

    52.4 °F

  • Average 2021–2026

    66.3 °F

  • Average High 2021–2026

    81.2 °F
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