Montclair Weather Forecast

    • 64
    • 92

    Mostly Sunny

    • 64
    • 91

    Mostly Sunny

    • 64
    • 89

    Mostly Sunny

    • 63
    • 90

    Mostly Sunny

    • 63
    • 88

    Mostly Sunny

    • 61
    • 86

    Mostly Sunny

Today 15 Jun San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Highs 95 to 101. Light Winds becoming west 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 15 Jun San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 58 to 65. Areas of Winds west 10 to 15 Mph with Gusts to 25 Mph in the evening becoming light.

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Montclair Temperature Statistics

June Temperature

Brackett Field Airport (5 miles)

  • Lowest 8 June, 2025

    57.2 °F

  • Average June

    72.8 °F

  • Highest 1 June, 2025

    87.8 °F

Climate (2020–Present)

Brackett Field Airport (5 miles)

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  • Average Low 2020–2025

    55.7 °F

  • Average 2020–2025

    67.7 °F

  • Average High 2020–2025

    75.6 °F
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