Montclair Weather Forecast

    • 56
    • 80

    Partly Sunny

    • 57
    • 85

    Mostly Sunny

    • 57
    • 82

    Mostly Sunny

    • 56
    • 83

    Partly Sunny

    • 56
    • 81

    Mostly Sunny

    • 54
    • 77

    Partly Sunny

Today 3 Apr San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny this morning. Becoming partly cloudy. Warmer. Highs 77 to 82. Areas of Winds north 20 to 30 Mph. Gusts to 50 Mph. Becoming 45 Mph this afternoon.

Tonight 3 Apr San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy in the evening. Becoming mostly clear. Lows 45 to 49 in wind Sheltered Areas to 49 to 57 in warmer Locations. Areas of Winds north 10 to 20 Mph becoming east overnight. Gusts to 35 Mph.

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Montclair Temperature Statistics

April Temperature

Brackett Field Airport (5 miles)

  • Lowest 1 April, 2026

    57.2 °F

  • Average April

    64.2 °F

  • Highest 1 April, 2026

    69.8 °F

Climate (2021–Present)

Brackett Field Airport (5 miles)

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  • Average Low 2021–2026

    55.9 °F

  • Average 2021–2026

    68 °F

  • Average High 2021–2026

    76 °F
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